Updated 8 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,762exploited flaws on CISA’s list

34added in the last 30 days

343new WordPress flaws this week

390,080entries in the database

53 results · page 1 of 2

Oct 26, 2026Multiple cross site scripting (XSS) vulnerabilities affect OPNsense firewall vesrion 26.7.1_1 and earlier allows low privileged attacker to execute Javascript iCVE-2026-115425 · Other software · OPNsense · reported by vulnerability@ncsc.chMedium 5.6
Multiple cross site scripting (XSS) vulnerabilities affect OPNsense firewall vesrion 26.7.1_1 and earlier allows low privileged attacker to execute Javascript in the context of another user visiting a specific page or clicking on a specifically crafted link.
Product
OPNsense firewall
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record digitalcanion.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-71490 · Other software · opnsense · reported by GitHubHigh 7.1
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.11, OPNsense\Core\ACL::hasPrivilege() appends a directly assigned comma-separated <priv> value as one string and then uses an exact comparison when checking user-config-readonly. A user directly assigned both a component write privilege and user-config-readonly can therefore be treated as lacking the read-only restriction, and MVC APIs protected by throwReadOnly() can persist configuration changes for that component. Group privileges are not affected by the same parser flaw because the group path already splits comma-separated values. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-63442 · Other software · opnsense · reported by GitHubHigh 8.1
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the unauthenticated WebGUI login usernamefld accepts carriage-return and line-feed characters that survive LOG_AUTH processing through syslog-ng-lockout.conf into the syslog-ng program destination feeding lockout_handler. The consumer's readline() processing treats an injected fragment as a separate authentication event and selects the first syntactically valid IP address from the forged line. An attacker with network access to the login page can forge failure events for another IP, causing that IP to be added to the sshlockout PF table and its active states to be killed, or forge accepted events that reset an attacker's own brute-force counter. This can block administrative, DNS, gateway, or monitoring addresses and can bypass password-guessing lockout without authentication. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-58395 · Other software · opnsense · reported by GitHubMedium 4.3
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the safe-delete path reached through ApiMutableModelControllerBase::delBase() interpolates an unvalidated safe-delete token from the request URL into an XPath expression over config.xml before confirming that the token is a valid identifier. A user holding any one affected module privilege can send a crafted token to one of 21 affected delete endpoints covering Traffic Shaper, DHCP relay, Dnsmasq, Firewall Category, or Kea DHCP, causing the XPath to match configuration data across modules. The resulting error response exposes configuration item names, descriptions, reference paths, and UUIDs and provides an XPath substring-presence oracle, including for modules the user cannot otherwise access. The request does not modify configuration or perform a deletion. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-58394 · Other software · opnsense · reported by GitHubMedium 5.2
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, src/www/system_advanced_admin.php reads certificate records into $a_cert but omits that array from legacy_html_escape_form_data() before rendering each certificate descr value in the SSL Certificate selector. The certificate description accepts HTML metacharacters, allowing a user with the page-system-certmanager privilege to store markup that executes when another user opens System Settings Administration. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-58393 · Other software · opnsense · reported by GitHubMedium 5.9
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the OpenVPN Client Specific Override common_name field accepts path traversal sequences and openvpn_csc_conf_write() concatenates the value into /var/etc/openvpn-csc/<vpnid>/<common_name> without normalization or a basename check. The affected event handlers are client_connect.php and user_pass_verify.php. An authenticated user with Client Specific Override privileges can store the traversal value, and a matching OpenVPN client-connect or authentication event causes a generated CSO file to be written outside the intended directory. The file content is generated OpenVPN configuration rather than arbitrary bytes, and practical exploitation requires the attacker to cause a matching common name or username to be processed. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-58392 · Other software · opnsense · reported by GitHubMedium 5.4
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the NTP GPS page stores the operator-supplied initcmd value in base64 form, applies legacy_html_escape_form_data() to the encoded string, and then uses base64_decode() to decode the value directly into the GPS initialization-command textarea in src/www/services_ntpd_gps.php. Because decoding occurs after escaping, stored HTML remains unescaped at the output sink. A user with page-services-ntp-gps privilege can store a value that closes the textarea, and script executes in the session of any user who later opens the GPS page. The script can read CSRF material and perform authenticated actions, including actions available to an administrator. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-58391 · Other software · opnsense · reported by GitHubMedium 5.4
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, Firewall Rules and NAT views place stored category names and alias descriptions into HTML title attributes in filter_rule.volt and nat_rule.volt without quote-safe encoding. The response layer uses ENT_NOQUOTES, so a double quote survives and closes the attribute, allowing an event-handler attribute to be added to the existing span. A user with Firewall Categories or Firewall Alias Edit privileges can store a category name or alias description; the category must be assigned to a filter or NAT rule, or the alias must be referenced by a rule source or destination, and the rule must be saved so the affected tooltip is rendered. Script then executes in the session of an administrator or other user who opens the affected Rules or NAT page. The script can access CSRF material and perform authenticated actions as the victim. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-58390 · Other software · opnsense · reported by GitHubHigh 8
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the OpenVPN connection-status dashboard widget in src/opnsense/www/js/widgets/OpenVPNClients.js and the connection-status view place a client common_name into data-common-name attributes without quote-safe encoding. Exploitation requires an OpenVPN server configured with username-as-common-name and RADIUS or LDAP authentication, plus the ability to provision or self-register a valid backend username containing a double quote; deployments where the same administrator controls both the identity backend and firewall do not cross a separate trust boundary. An authenticated client using that username can close the attribute and add an event handler, while the local user database is not affected because its username validator rejects quotes. Script executes in an administrator's session when the administrator opens the dashboard or connection-status page and the injected event is triggered; the demonstrated payload used pointer movement over the client row rather than unconditional page-load execution. The advisory demonstrates that the script can read config.xml, invoke privileged APIs, reset the root p
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-57155 · Other software · opnsense · reported by GitHubCritical 9.9
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the Firewall Alias GeoIP importer's process_zip() and process_gzip() paths in src/opnsense/scripts/filter/lib/alias/geoip.py use an unvalidated CSV country_code value to construct output filenames below /usr/local/share/GeoIP/alias. A user with Firewall Alias Edit privilege can configure an attacker-controlled GeoIP source URL and supply an archive whose country code traverses into another existing directory, causing attacker-controlled content to be written as root with an -IPv4 or -IPv6 suffix. A crafted newsyslog fragment and oversized log file can use the default hourly root cron job to execute commands as root, resulting in complete firewall compromise. This issue is fixed in version 26.1.11.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 15, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-53582 · Other software · opnsense · reported by GitHubHigh 7.1
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.10, the Trust module stores attacker-controlled certificate authority and certificate refid values and interpolates them into XPath expressions in src/opnsense/mvc/app/models/OPNsense/Trust/FieldTypes/CAsField.php and src/opnsense/mvc/app/models/OPNsense/Trust/FieldTypes/CertificatesField.php. A user with CA Manager or Certificate Manager privileges can submit a crafted refid and repeatedly retrieve the object to obtain a boolean refcount oracle, allowing values in config.xml to be recovered character by character. Exposed values can include password hashes, API credentials, certificate private keys, VPN key material, and high-availability credentials, enabling privilege escalation and compromise of other security domains. This issue is fixed in version 26.1.10.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Sep 8, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-53581 · Other software · opnsense · reported by GitHubCritical 9
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.9 of opnsense/core and version 26.4_20 of BE/opnsense/core, a path traversal vulnerability in the NTP configuration module allows an attacker to overwrite arbitrary files on the system as the root user. By manipulating the GPS or PPS serial port parameter, an attacker with access to the NTP configuration can escape the intended directory and force the system to write user-controlled data to any file on the filesystem. Version 26.1.9 of opnsense/core and version 26.4_20 of BE/opnsense/core patch the issue.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Aug 3, 2026OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject arbitrary HTML or JavaScript by embeddCVE-2026-49132 · Other software · Deciso B.V. · reported by VulnCheckMedium 5.1
OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject arbitrary HTML or JavaScript by embedding payloads in the certificate description field via the trust certificate API. The unsanitized description value is persisted and later rendered in the Dashboard Certificates widget through Certificates.js, which interpolates the raw value into HTML attribute and text content sinks without encoding, causing injected scripts to execute in the browser of any authenticated user who views the Dashboard, enabling session hijacking or credential theft.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record docs.opnsense.org github.com
Aug 3, 2026OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers with firewall rule management privileges to injeCVE-2026-49131 · Other software · Deciso B.V. · reported by VulnCheckMedium 5.1
OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers with firewall rule management privileges to inject arbitrary HTML or JavaScript by embedding payloads in the firewall rule description field via the filter API endpoint. The unsanitized description value is persisted and later rendered through the default cell formatter in opnsense_bootgrid.js, which assigns raw cell content to innerHTML, causing injected scripts to execute in the browser of any authenticated user who views the Firewall Rules page, enabling session hijacking or credential theft.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record docs.opnsense.org github.com
May 13, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-45158 · Other software · opnsense · reported by GitHubCritical 9.1
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP configuration of the configured interface, which is processed by a shell script, allowing remote code execution as root on the underlying operating system. This vulnerability is fixed in 26.1.8.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com
May 13, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-44195 · Other software · opnsense · reported by GitHubMedium 5.3
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense lockout_handler allows an unauthenticated attacker to continuously reset the authentication failure counter for their IP address. By interjecting a crafted username containing a success keyword ("Accepted" or "Successful login") between normal brute-force attempts, an attacker can prevent the failure counter from ever reaching the lockout threshold. This vulnerability is fixed in 26.1.7.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com gist.github.com
May 13, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-44194 · Other software · opnsense · reported by GitHubCritical 9.1
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execution (RCE) vulnerability in the OPNsense core allows a user with user-management privileges to execute arbitrary system commands as root. An attacker can bypass input validation by formatting their malicious payload as a compliant email address, allowing shell commands to reach the underlying operating system. The flaw exists in the local user synchronization flow, within core/src/opnsense/scripts/auth/sync_user.php. This vulnerability is fixed in 26.1.8.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
May 13, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-44193 · Other software · opnsense · reported by GitHubCritical 9.1
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, the XMLRPC method opnsense.restore_config_section fails to sanitize user supplied input leading to Remote Code Execution. This vulnerability is fixed in 26.1.7.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Apr 9, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-34578 · Other software · opnsense · reported by GitHubHigh 8.2
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.6, OPNsense's LDAP authentication connector passes the login username directly into an LDAP search filter without calling ldap_escape(). An unauthenticated attacker can inject LDAP filter metacharacters into the username field of the WebGUI login page to enumerate valid LDAP usernames in the configured directory. When the LDAP server configuration includes an Extended Query to restrict login to members of a specific group, the same injection can be used to bypass that group membership restriction and authenticate as any LDAP user whose password is known, regardless of group membership. This vulnerability is fixed in 26.1.6.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Mar 11, 2026OPNsense is a FreeBSD based firewall and routing platform.CVE-2026-30868 · Other software · opnsense · reported by GitHubMedium 6.3
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.4, multiple OPNsense MVC API endpoints perform state‑changing operations but are accessible via HTTP GET requests without CSRF protection. The framework CSRF validation in ApiControllerBase only applies to POST/PUT/DELETE methods, allowing authenticated GET requests to bypass CSRF verification. As a result, a malicious website can trigger privileged backend actions when visited by an authenticated user, causing unintended service reloads and configuration changes through configd. This results in an authenticated Cross‑Site Request Forgery vulnerability allowing unauthorized system state changes. This vulnerability is fixed in 26.1.4.
Product
core
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com
Feb 20, 2026Deciso OPNsense diag_backup.php filename Command Injection Remote Code Execution Vulnerability.CVE-2026-2035 · Other software · Deciso · reported by zdi-disclosures@trendmicro.comMedium 6.8
Deciso OPNsense diag_backup.php filename Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Deciso OPNsense. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of backup configuration files. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-28131.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com zerodayinitiative.com
Feb 15, 2026OPNsense 19.1 contains a reflected cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject malicious scripCVE-2019-25377 · Other software · Opnsense · reported by VulnCheckMedium 4.8
OPNsense 19.1 contains a reflected cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject malicious scripts via the value parameter. Attackers can craft POST requests with script payloads in the value parameter to execute JavaScript in the context of authenticated user sessions.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted paCVE-2019-25376 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted payloads through the ignoreLogACL parameter. Attackers can send POST requests to the proxy endpoint with JavaScript code in the ignoreLogACL parameter to execute arbitrary scripts in users' browsers.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted inCVE-2019-25375 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the mailserver parameter. Attackers can send POST requests to the monit interface with JavaScript payloads in the mailserver parameter to execute arbitrary code in users' browsers.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting the passthrough_networks pCVE-2019-25374 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting the passthrough_networks parameter in vpn_ipsec_settings.php. Attackers can craft POST requests with JavaScript payloads in the passthrough_networks parameter to execute arbitrary code in users' browsers.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting crafted input tCVE-2019-25373 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting crafted input to the category parameter. Attackers can send POST requests to firewall_rules_edit.php with script payloads in the category field to execute arbitrary JavaScript in the browsers of other users accessing firewall rule pages.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by exploiting insufficieCVE-2019-25372 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by exploiting insufficient input validation in the host parameter. Attackers can submit crafted payloads through POST requests to diag_traceroute.php to execute arbitrary JavaScript in the context of a user's browser session.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by exploiting insufficieCVE-2019-25371 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by exploiting insufficient input validation in the host parameter. Attackers can submit crafted POST requests to the diag_ping.php endpoint with script payloads in the host parameter to execute arbitrary JavaScript in users' browsers.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input through multCVE-2019-25370 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input through multiple parameters. Attackers can send POST requests to interfaces_vlan_edit.php with script payloads in the tag, descr, or vlanif parameters to execute arbitrary JavaScript in users' browsers.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject persistent malicioCVE-2019-25369 · Other software · Opnsense · reported by VulnCheckMedium 5.1
OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject persistent malicious scripts via the tunable parameter. Attackers can submit POST requests with script payloads that are stored and executed in the context of authenticated user sessions when the page is viewed.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Feb 15, 2026OPNsense 19.1 contains multiple cross-site scripting vulnerabilities in the diag_backup.php endpoint that allow attackers to inject malicious scripts through muCVE-2019-25368 · Other software · Opnsense · reported by VulnCheckMedium 4.8
OPNsense 19.1 contains multiple cross-site scripting vulnerabilities in the diag_backup.php endpoint that allow attackers to inject malicious scripts through multiple parameters including GDrive_GDriveEmail, GDrive_GDriveFolderID, GDrive_GDriveBackupCount, Nextcloud_url, Nextcloud_user, Nextcloud_password, Nextcloud_password_encryption, and Nextcloud_backupdir. Attackers can submit POST requests with script payloads in these parameters to execute arbitrary JavaScript in the context of authenticated administrator sessions.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.opnsense.org opnsense.org
Dec 23, 2025Deciso OPNsense diag_backup.php filename Directory Traversal Arbitrary File Creation Vulnerability.CVE-2025-13698 · Other software · Deciso · reported by zdi-disclosures@trendmicro.comMedium 4.5
Deciso OPNsense diag_backup.php filename Directory Traversal Arbitrary File Creation Vulnerability. This vulnerability allows network-adjacent attackers to create arbitrary files on affected installations of Deciso OPNsense. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of backup configuration files. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create files in the context of root. Was ZDI-CAN-28133.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com zerodayinitiative.com
Oct 1, 2025In Deciso OPNsense before 25.7.4, when creating an "Interfaces: Devices: Point-to-Point" entry, the value of the parameter ptpid is not sanitized of HTML-relateCVE-2025-34182 · Other software · Deciso · reported by VulnCheckMedium 5.1
In Deciso OPNsense before 25.7.4, when creating an "Interfaces: Devices: Point-to-Point" entry, the value of the parameter ptpid is not sanitized of HTML-related characters/strings. This value is directly displayed when visiting the page/interfaces_assign.php, which can result in stored cross-site scripting. The attacker must be authenticated with at-least "Interfaces: PPPs: Edit" permission. This vulnerability has been addressed by the vendor in the product release notes as "ui: legacy_html_escape_form_data() was not escaping keys only data elements."
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record docs.opnsense.org vulncheck.com
Aug 27, 2025OPNsense before 25.1.8 contains an authenticated command injection vulnerability in its Bridge Interface Edit endpoint (interfaces_bridge_edit.php).CVE-2025-50989 · Other software · OPNsense · reported by MITRECritical 9.1
OPNsense before 25.1.8 contains an authenticated command injection vulnerability in its Bridge Interface Edit endpoint (interfaces_bridge_edit.php). The span POST parameter is concatenated into a system-level command without proper sanitization or escaping, allowing an administrator to inject arbitrary shell operators and payloads. Successful exploitation results in remote code execution with the privileges of the web service (typically root), potentially leading to full system compromise or lateral movement. This vulnerability arises from inadequate input validation and improper handling of user-supplied data in backend command invocations.
Product
OPNsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 23, 2023DECISO OPNsense 23.1 does not impose rate limits for authentication, allowing attackers to perform a brute-force attack to bypass authentication.CVE-2023-27152 · Other software · Opnsense · reported by MITRECritical 9.8
DECISO OPNsense 23.1 does not impose rate limits for authentication, allowing attackers to perform a brute-force attack to bypass authentication.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record esecforte.com esecforte.com
Sep 28, 2023OPNsense before 23.7.5 allows XSS via the index.php sequence parameter to the Lobby Dashboard.CVE-2023-44276 · Other software · Opnsense · reported by MITREMedium 5.4
OPNsense before 23.7.5 allows XSS via the index.php sequence parameter to the Lobby Dashboard.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Sep 28, 2023OPNsense before 23.7.5 allows XSS via the index.php column_count parameter to the Lobby Dashboard.CVE-2023-44275 · Other software · Opnsense · reported by MITREMedium 5.4
OPNsense before 23.7.5 allows XSS via the index.php column_count parameter to the Lobby Dashboard.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Aug 9, 2023A command injection vulnerability in the component /api/cron/settings/setJob/ of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allowCVE-2023-39008 · Other software · Opnsense · reported by MITRECritical 9.8
A command injection vulnerability in the component /api/cron/settings/setJob/ of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to execute arbitrary system commands.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023/ui/cron/item/open in the Cron component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows XSS via openAction in app/controlleCVE-2023-39007 · Other software · Opnsense · reported by MITRECritical 9.6
/ui/cron/item/open in the Cron component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows XSS via openAction in app/controllers/OPNsense/Cron/ItemController.php.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Aug 9, 2023The Crash Reporter (crash_reporter.php) component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 mishandles input sanitization.CVE-2023-39006 · Other software · Opnsense · reported by MITREMedium 5.4
The Crash Reporter (crash_reporter.php) component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 mishandles input sanitization.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023Insecure permissions exist for configd.socket in OPNsense Community Edition before 23.7 and Business Edition before 23.4.2.CVE-2023-39005 · Other software · Opnsense · reported by MITREHigh 7.5
Insecure permissions exist for configd.socket in OPNsense Community Edition before 23.7 and Business Edition before 23.4.2.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023Insecure permissions in the configuration directory (/conf/) of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allow attackers to accCVE-2023-39004 · Other software · Opnsense · reported by MITRECritical 9.8
Insecure permissions in the configuration directory (/conf/) of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allow attackers to access sensitive information (e.g., hashed root password) which could lead to privilege escalation.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record logicaltrust.net logicaltrust.net
Aug 9, 2023OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 was discovered to contain insecure permissions in the directory /tmp.CVE-2023-39003 · Other software · Opnsense · reported by MITREHigh 7.5
OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 was discovered to contain insecure permissions in the directory /tmp.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record logicaltrust.net logicaltrust.net
Aug 9, 2023A cross-site scripting (XSS) vulnerability in the act parameter of system_certmanager.php in OPNsense Community Edition before 23.7 and Business Edition before CVE-2023-39002 · Other software · Opnsense · reported by MITREMedium 6.1
A cross-site scripting (XSS) vulnerability in the act parameter of system_certmanager.php in OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023A command injection vulnerability in the component diag_backup.php of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackersCVE-2023-39001 · Other software · Opnsense · reported by MITRECritical 9.8
A command injection vulnerability in the component diag_backup.php of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to execute arbitrary commands via a crafted backup configuration file.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023A reflected cross-site scripting (XSS) vulnerability in the component /ui/diagnostics/log/core/ of OPNsense Community Edition before 23.7 and Business Edition bCVE-2023-39000 · Other software · Opnsense · reported by MITREMedium 6.1
A reflected cross-site scripting (XSS) vulnerability in the component /ui/diagnostics/log/core/ of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to inject arbitrary JavaScript via the URL path.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023A Cross-Site Request Forgery (CSRF) in the System Halt API (/system/halt) of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows atCVE-2023-38999 · Other software · Opnsense · reported by MITREMedium 6.5
A Cross-Site Request Forgery (CSRF) in the System Halt API (/system/halt) of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to cause a Denial of Service (DoS) via a crafted GET request.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023An open redirect in the Login page of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to redirect a victim user to anCVE-2023-38998 · Other software · Opnsense · reported by MITREMedium 6.1
An open redirect in the Login page of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to redirect a victim user to an arbitrary web site via a crafted URL.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Aug 9, 2023A directory traversal vulnerability in the Captive Portal templates of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackerCVE-2023-38997 · Other software · Opnsense · reported by MITREHigh 7.2
A directory traversal vulnerability in the Captive Portal templates of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to execute arbitrary system commands as root via a crafted ZIP archive.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com logicaltrust.net
Nov 8, 2021A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.CVE-2021-42770 · Other software · Opnsense · reported by MITREMedium 6.1
A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.
Product
Opnsense
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cert.orange.com github.com

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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