Updated 26 min 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.

1,764exploited flaws on CISA’s list

36added in the last 30 days

479new WordPress flaws this week

390,525entries in the database

202 results · page 2 of 5

May 27, 2021An issue was discovered in Squid before 4.15 and 5.x before 5.0.6.CVE-2021-31808 · Other software · Squid-cache · reported by MITREMedium 6.5
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record seclists.org openwall.com
May 27, 2021An issue was discovered in Squid before 4.15 and 5.x before 5.0.6.CVE-2021-31806 · Other software · Squid-cache · reported by MITREMedium 6.5
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record seclists.org openwall.com
May 27, 2021An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6.CVE-2021-28662 · Other software · Squid-cache · reported by MITREMedium 6.5
An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record seclists.org openwall.com
May 27, 2021An issue was discovered in Squid before 4.15 and 5.x before 5.0.6.CVE-2021-28652 · Other software · Squid-cache · reported by MITREMedium 4.9
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record seclists.org openwall.com
May 27, 2021An issue was discovered in Squid before 4.15 and 5.x before 5.0.6.CVE-2021-28651 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record seclists.org openwall.com
Mar 19, 2021An issue was discovered in Squid through 4.13 and 5.x through 5.0.4.CVE-2020-25097 · Other software · Squid-cache · reported by MITREHigh 8.6
An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Mar 9, 2021Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data.CVE-2021-28116 · Other software · Squid-cache · reported by MITRELow 3.7
Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record openwall.com squid-cache.org
Sep 2, 2020An issue was discovered in Squid before 4.13 and 5.x before 5.0.4.CVE-2020-15811 · Other software · Squid-cache · reported by MITREMedium 6.5
An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Sep 2, 2020An issue was discovered in Squid before 4.13 and 5.x before 5.0.4.CVE-2020-15810 · Other software · Squid-cache · reported by MITREMedium 6.5
An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Aug 24, 2020Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted CacCVE-2020-24606 · Other software · Squid-cache · reported by MITREHigh 8.6
Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Jun 30, 2020An issue was discovered in Squid 5.x before 5.0.3.CVE-2020-14059 · Other software · Squid-cache · reported by MITREMedium 6.5
An issue was discovered in Squid 5.x before 5.0.3. Due to an Incorrect Synchronization, a Denial of Service can occur when processing objects in an SMP cache because of an Ipc::Mem::PageStack::pop ABA problem during access to the memory page/slot management list.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Jun 30, 2020An issue was discovered in Squid before 4.12 and 5.x before 5.0.3.CVE-2020-14058 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Jun 30, 2020An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3.CVE-2020-15049 · Other software · Squid-cache · reported by MITRECritical 9.9
An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
May 18, 2020D-Link DSP-W215 1.26b03 devices allow information disclosure by intercepting messages on the local network, as demonstrated by a Squid Proxy.CVE-2020-13135 · Other software · Dlink · reported by MITREMedium 6.5
D-Link DSP-W215 1.26b03 devices allow information disclosure by intercepting messages on the local network, as demonstrated by a Squid Proxy.
Product
Dsp-w215 Firmware
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record supportannouncement.us.dlink.com supportannouncement.us.dlink.com
Apr 23, 2020An issue was discovered in Squid before 5.0.2.CVE-2020-11945 · Other software · Squid-cache · reported by MITRECritical 9.8
An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org master.squid-cache.org
Apr 15, 2020An issue was discovered in Squid through 4.7 and 5.CVE-2019-12520 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request. If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Apr 15, 2020An issue was discovered in Squid through 4.7.CVE-2019-12519 · Other software · Squid-cache · reported by MITRECritical 9.8
An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org openwall.com
Apr 15, 2020An issue was discovered in Squid through 4.7.CVE-2019-12524 · Other software · Squid-cache · reported by MITRECritical 9.8
An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record gitlab.com lists.debian.org
Apr 15, 2020An issue was discovered in Squid through 4.7.CVE-2019-12522 · Other software · Squid-cache · reported by MITREMedium 4.5
An issue was discovered in Squid through 4.7. When Squid is run as root, it spawns its child processes as a lesser user, by default the user nobody. This is done via the leave_suid call. leave_suid leaves the Saved UID as 0. This makes it trivial for an attacker who has compromised the child process to escalate their privileges back to root.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record gitlab.com security.netapp.com
Apr 15, 2020An issue was discovered in Squid through 4.7.CVE-2019-12521 · Other software · Squid-cache · reported by MITREMedium 5.9
An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org openwall.com
Mar 20, 2020Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.CVE-2019-18860 · Other software · Squid-cache · reported by MITREMedium 6.1
Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org github.com
Feb 4, 2020An issue was discovered in Squid before 4.10.CVE-2019-12528 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid before 4.10. It allows a crafted FTP server to trigger disclosure of sensitive information from heap memory, such as information associated with other users' sessions or non-Squid processes.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Feb 4, 2020An issue was discovered in Squid before 4.10.CVE-2020-8517 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Feb 4, 2020An issue was discovered in Squid before 4.10.CVE-2020-8450 · Other software · Squid-cache · reported by MITREHigh 7.3
An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Feb 4, 2020An issue was discovered in Squid before 4.10.CVE-2020-8449 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Jan 21, 2020log.c in Squid Analysis Report Generator (sarg) through 2.3.11 allows local privilege escalation.CVE-2019-18932 · Other software · Squid Analysis Report Generator Project · reported by MITREHigh 7
log.c in Squid Analysis Report Generator (sarg) through 2.3.11 allows local privilege escalation. By default, it uses a fixed temporary directory /tmp/sarg. As the root user, sarg creates this directory or reuses an existing one in an insecure manner. An attacker can pre-create the directory, and place symlinks in it (after winning a /tmp/sarg/denied.int_unsort race condition). The outcome will be corrupted or newly created files in privileged file system locations.
Product
Squid Analysis Report Generator
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Nov 26, 2019An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8.CVE-2019-18679 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Nov 26, 2019An issue was discovered in Squid 3.x and 4.x through 4.8.CVE-2019-18678 · Other software · Squid-cache · reported by MITREMedium 5.3
An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Nov 26, 2019An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hCVE-2019-18677 · Other software · Squid-cache · reported by MITREMedium 6.1
An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Nov 26, 2019An issue was discovered in Squid 3.x and 4.x through 4.8.CVE-2019-18676 · Other software · Squid-cache · reported by MITREHigh 7.5
An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Nov 26, 2019An issue was discovered in Squid before 4.9.CVE-2019-12526 · Other software · Squid-cache · reported by MITRECritical 9.8
An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org bugzilla.suse.com
Nov 26, 2019An issue was discovered in Squid before 4.9.CVE-2019-12523 · Other software · Squid-cache · reported by MITRECritical 9.1
An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org squid-cache.org
Oct 7, 2019The /usr/sbin/pinger binary packaged with squid in SUSE Linux Enterprise Server 15 before and including version 4.8-5.8.1 and in SUSE Linux Enterprise Server 12CVE-2019-3688 · Other software · SUSE · reported by meissner@suse.deMedium 5.1
The /usr/sbin/pinger binary packaged with squid in SUSE Linux Enterprise Server 15 before and including version 4.8-5.8.1 and in SUSE Linux Enterprise Server 12 before and including 3.5.21-26.17.1 had squid:root, 0750 permissions. This allowed an attacker that compromissed the squid user to gain persistence by changing the binary
Product
SUSE Linux Enterprise Server 15
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Aug 15, 2019Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory.CVE-2019-12854 · Other software · Squid-cache · reported by MITREHigh 7.5
Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Jul 11, 2019An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7.CVE-2019-12529 · Other software · Squid-cache · reported by MITREMedium 5.9
An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Jul 11, 2019An issue was discovered in Squid 4.0.23 through 4.7.CVE-2019-12527 · Other software · Squid-cache · reported by MITREHigh 8.8
An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Jul 11, 2019An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7.CVE-2019-12525 · Other software · Squid-cache · reported by MITRECritical 9.8
An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Jul 5, 2019The cachemgr.cgi web module of Squid through 4.7 has XSS via the user_name or auth parameter.CVE-2019-13345 · Other software · Squid-cache · reported by MITREMedium 6.1
The cachemgr.cgi web module of Squid through 4.7 has XSS via the user_name or auth parameter.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
Nov 9, 2018Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet.CVE-2018-19132 · Other software · Squid-cache · reported by MITREMedium 5.9
Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Nov 9, 2018Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP(S) error page generation for certificate errors.CVE-2018-19131 · Other software · Squid-cache · reported by MITREMedium 6.1
Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP(S) error page generation for certificate errors.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
May 16, 2018This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318.CVE-2018-1172 · Other software · The Squid Software Foundation · reported by zdi-disclosures@trendmicro.comMedium 5.9
This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. Was ZDI-CAN-6088.
Product
The Squid Software Foundation Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org zerodayinitiative.com
Feb 9, 2018The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-ForwCVE-2018-1000027 · Other software · Squid-cache · reported by MITREHigh 7.5
The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Feb 9, 2018The Squid Software Foundation Squid HTTP Caching Proxy version 3.0 to 3.5.27, 4.0 to 4.0.22 contains a Incorrect Pointer Handling vulnerability in ESI Response CVE-2018-1000024 · Other software · Squid-cache · reported by MITREHigh 7.5
The Squid Software Foundation Squid HTTP Caching Proxy version 3.0 to 3.5.27, 4.0 to 4.0.22 contains a Incorrect Pointer Handling vulnerability in ESI Response Processing that can result in Denial of Service for all clients using the proxy.. This attack appear to be exploitable via Remote server delivers an HTTP response payload containing valid but unusual ESI syntax.. This vulnerability appears to have been fixed in 4.0.23 and later.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record squid-cache.org squid-cache.org
Feb 9, 2017Cross-site scripting (XSS) vulnerability in squidGuard.cgi in squidGuard before 1.5 allows remote attackers to inject arbitrary web script or HTML via a blockedCVE-2015-8936 · Other software · Squidguard · reported by security@opentext.comMedium 6.1
Cross-site scripting (XSS) vulnerability in squidGuard.cgi in squidGuard before 1.5 allows remote attackers to inject arbitrary web script or HTML via a blocked site link.
Product
Squidguard
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record openwall.com openwall.com
Jan 27, 2017Incorrect HTTP Request header comparison in Squid HTTP Proxy 3.5.0.1 through 3.5.22, and 4.0.1 through 4.0.16 results in Collapsed Forwarding feature mistakenlyCVE-2016-10003 · Other software · Squid-cache · reported by MITREHigh 7.5
Incorrect HTTP Request header comparison in Squid HTTP Proxy 3.5.0.1 through 3.5.22, and 4.0.1 through 4.0.16 results in Collapsed Forwarding feature mistakenly identifying some private responses as being suitable for delivery to multiple clients.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record openwall.com securityfocus.com
Jan 27, 2017Incorrect processing of responses to If-None-Modified HTTP conditional requests in Squid HTTP Proxy 3.1.10 through 3.1.23, 3.2.0.3 through 3.5.22, and 4.0.1 thrCVE-2016-10002 · Other software · Debian · reported by MITREHigh 7.5
Incorrect processing of responses to If-None-Modified HTTP conditional requests in Squid HTTP Proxy 3.1.10 through 3.1.23, 3.2.0.3 through 3.5.22, and 4.0.1 through 4.0.16 leads to client-specific Cookie data being leaked to other clients. Attack requests can easily be crafted by a client to probe a cache for this information.
Product
Debian Linux
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record rhn.redhat.com rhn.redhat.com
Aug 10, 2016Stack-based buffer overflow in the munge_other_line function in cachemgr.cgi in the squid package before 3.1.23-16.el6_8.6 in Red Hat Enterprise Linux 6 allows CVE-2016-5408 · Other software · Oracle · reported by Red HatCritical 9.8
Stack-based buffer overflow in the munge_other_line function in cachemgr.cgi in the squid package before 3.1.23-16.el6_8.6 in Red Hat Enterprise Linux 6 allows remote attackers to execute arbitrary code via unspecified vectors. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-4051.
Product
Linux
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record rhn.redhat.com oracle.com
May 10, 2016Double free vulnerability in Esi.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via a crafted EdCVE-2016-4556 · Other software · Squid-cache · reported by MITREHigh 7.5
Double free vulnerability in Esi.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via a crafted Edge Side Includes (ESI) response.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org
May 10, 2016client_side_request.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via crafted Edge Side IncludeCVE-2016-4555 · Other software · Squid-cache · reported by MITREHigh 7.5
client_side_request.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via crafted Edge Side Includes (ESI) responses.
Product
Squid
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record bugs.squid-cache.org lists.opensuse.org
May 10, 2016mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly conduct cache-poisoning attacks via a craCVE-2016-4554 · Other software · Oracle · reported by MITREHigh 8.6
mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly conduct cache-poisoning attacks via a crafted HTTP Host header, aka a "header smuggling" issue.
Product
Linux
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.opensuse.org lists.opensuse.org

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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