Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
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.

1,766exploited flaws on CISA’s list
35added in the last 30 days
585new WordPress flaws this week
391,310entries in the database

1,730 results · page 35 of 35

  • Jun 1, 2004Stack-based buffer overflow in the Socks-5 proxy code for XChat 1.8.0 to 2.0.8, with socks5 traversal enabled, allows remote attackers to execute arbitrary codeCVE-2004-0409 · Other software · Xchat · reported by MITREHigh 7.5

    Stack-based buffer overflow in the Socks-5 proxy code for XChat 1.8.0 to 2.0.8, with socks5 traversal enabled, allows remote attackers to execute arbitrary code.

    Product
    Xchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jan 5, 2004xchat 2.0.6 allows remote attackers to cause a denial of service (crash) via a passive DCC request with an invalid ID number, which causes a null dereference.CVE-2003-1000 · Other software · Xchat · reported by MITREHigh 7.5

    xchat 2.0.6 allows remote attackers to cause a denial of service (crash) via a passive DCC request with an invalid ID number, which causes a null dereference.

    Product
    Xchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2003WF-Chat 1.0 Beta stores sensitive information under the web root with insufficient access control, which allows remote attackers to obtain authentication informCVE-2003-1540 · Other software · Wfchat · reported by MITREMedium 5

    WF-Chat 1.0 Beta stores sensitive information under the web root with insufficient access control, which allows remote attackers to obtain authentication information via a direct request to (1) !pwds.txt and (2) !nicks.txt.

    Product
    Wfchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2003ipchat.php in Invision Power Board 1.1.1 allows remote attackers to execute arbitrary PHP code, if register_globals is enabled, by modifying the root_path paramCVE-2003-1385 · Other software · Invision Power Services · reported by MITREMedium 6.8

    ipchat.php in Invision Power Board 1.1.1 allows remote attackers to execute arbitrary PHP code, if register_globals is enabled, by modifying the root_path parameter to reference a URL on a remote web server that contains the code.

    Product
    Invision Power Board
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2003Buffer overflow in the Yahoo! Audio Conferencing (aka Voice Chat) ActiveX control before 1,0,0,45 allows remote attackers to cause a denial of service and possiCVE-2003-1129 · Other software · Yahoo · reported by MITRELow 2.6

    Buffer overflow in the Yahoo! Audio Conferencing (aka Voice Chat) ActiveX control before 1,0,0,45 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a URL with a long hostname to Yahoo! Messenger or Yahoo! Chat.

    Product
    Audio Conferencing Activex Control
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Nov 2, 2003Unichat allows remote attackers to cause a denial of service (crash) by adding extra chat characters (avatars) and logging in to a chat room, as demonstrated usCVE-2003-1188 · Other software · Unichat · reported by MITREMedium 5

    Unichat allows remote attackers to cause a denial of service (crash) by adding extra chat characters (avatars) and logging in to a chat room, as demonstrated using duplicate ACTOR entries in u2res000.rit.

    Product
    Unichat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 29, 2003chatbox.php in e107 0.554 and 0.603 allows remote attackers to cause a denial of service (pages fail to load) via HTML in the Name field, which prevents the maiCVE-2003-1191 · Other software · E107 · reported by MITREMedium 5

    chatbox.php in e107 0.554 and 0.603 allows remote attackers to cause a denial of service (pages fail to load) via HTML in the Name field, which prevents the main.php form from being loaded.

    Product
    E107
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2002SQL injection vulnerability in index.php of WebChat 1.5 included in XOOPS 1.0 allows remote attackers to execute arbitrary SQL commands via the roomid parameterCVE-2002-2391 · Other software · Webchat.org · reported by MITREHigh 7.5

    SQL injection vulnerability in index.php of WebChat 1.5 included in XOOPS 1.0 allows remote attackers to execute arbitrary SQL commands via the roomid parameter.

    Product
    Webchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2002Digi-Net Technologies DigiChat 3.5 allows chat users to obtain the IP addresses of other chat users via a "Showip" parameter in the chat applet.CVE-2002-2184 · Other software · Digi-net Technologies · reported by MITREMedium 5

    Digi-Net Technologies DigiChat 3.5 allows chat users to obtain the IP addresses of other chat users via a "Showip" parameter in the chat applet.

    Product
    Digichat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2002csChatRBox.cgi in CGIScript.net csChat-R-Box allows remote attackers to execute arbitrary Perl code via the setup parameter, which is processed by the Perl evalCVE-2002-1752 · Other software · Cgiscript · reported by MITREHigh 7.5

    csChatRBox.cgi in CGIScript.net csChat-R-Box allows remote attackers to execute arbitrary Perl code via the setup parameter, which is processed by the Perl eval function.

    Product
    Cschat-r-box
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2002Buffer overflow in the IRC module of Trillian 0.725 and 0.73 allowing remote attackers to execute arbitrary code via a long DCC Chat message.CVE-2002-2173 · Other software · Cerulean Studios · reported by MITREHigh 7.5

    Buffer overflow in the IRC module of Trillian 0.725 and 0.73 allowing remote attackers to execute arbitrary code via a long DCC Chat message.

    Product
    Trillian
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2002ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows remote attackers to cause a denial of service by repeatedly logginCVE-2002-1849 · Other software · Parachat · reported by MITREMedium 5

    ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows remote attackers to cause a denial of service by repeatedly logging into a chat room, hitting the back button, then logging into the same chat room as a different user, which fills the chat room with invalid users.

    Product
    Parachat Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 24, 2002Buffer overflow in Melange Chat System 1.10 allows remote attackers to cause a denial of service (chat server crash) and possibly execute arbitrary code via theCVE-2002-1351 · Other software · Melange · reported by MITREMedium 5

    Buffer overflow in Melange Chat System 1.10 allows remote attackers to cause a denial of service (chat server crash) and possibly execute arbitrary code via the msgText buffer in the chat_InterpretData function, as demonstrated via a long Nick (nickname) request.

    Product
    Melange Chat System
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 12, 2002home.php in ARSC (Really Simple Chat) 1.0.1 and earlier allows remote attackers to determine the full pathname of the web server via an invalid language in the CVE-2002-0463 · Other software · Arsc Really Simple Chat · reported by MITREMedium 5

    home.php in ARSC (Really Simple Chat) 1.0.1 and earlier allows remote attackers to determine the full pathname of the web server via an invalid language in the arsc_language parameter, which leaks the pathname in an error message.

    Product
    Arsc Really Simple Chat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jul 3, 2002Multiple buffer overflows in Melange Chat server 2.02 allow remote or local attackers to cause a denial of service (crash) and possibly execute arbitrary code vCVE-2002-0552 · Other software · Melange · reported by MITREHigh 7.5

    Multiple buffer overflows in Melange Chat server 2.02 allow remote or local attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a long argument in the /yell command, (2) long lines in the /etc/melange.conf configuration file, (3) long file names, or possibly other attacks.

    Product
    Melange Chat System
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 25, 2002XChat 1.8.7 and earlier, including default configurations of 1.4.2 and 1.4.3, allows remote attackers to execute arbitrary IRC commands as other clients via encCVE-2002-0006 · Other software · Xchat · reported by MITREHigh 7.5

    XChat 1.8.7 and earlier, including default configurations of 1.4.2 and 1.4.3, allows remote attackers to execute arbitrary IRC commands as other clients via encoded characters in a PRIVMSG command that calls CTCP PING, which expands the characters in the client response when the percascii variable is set.

    Product
    Xchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 25, 2002XChat IRC client allows remote attackers to execute arbitrary commands via a /dns command on a host whose DNS reverse lookup contains shell metacharacters.CVE-2002-0382 · Other software · Xchat · reported by MITREHigh 7.5

    XChat IRC client allows remote attackers to execute arbitrary commands via a /dns command on a host whose DNS reverse lookup contains shell metacharacters.

    Product
    Xchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 29, 2002Buffer overflow in Microsoft MSN Chat ActiveX Control, as used in MSN Messenger 4.5 and 4.6, and Exchange Instant Messenger 4.5 and 4.6, allows remote attackersCVE-2002-0155 · Computers, phones & browsers · Microsoft · reported by MITREHigh 7.5

    Buffer overflow in Microsoft MSN Chat ActiveX Control, as used in MSN Messenger 4.5 and 4.6, and Exchange Instant Messenger 4.5 and 4.6, allows remote attackers to execute arbitrary code via a long ResDLL parameter in the MSNChat OCX.

    Product
    MSN Chat Control
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 2001Open Projects Network Internet Relay Chat (IRC) daemon u2.10.05.18 does not perform a double-reverse DNS lookup, which allows remote attackers to spoof any valiCVE-2001-1488 · Other software · Open Projects Network · reported by MITREMedium 5

    Open Projects Network Internet Relay Chat (IRC) daemon u2.10.05.18 does not perform a double-reverse DNS lookup, which allows remote attackers to spoof any valid hostname on the Internet. NOTE: a followup post suggests that this is not an issue in the daemon.

    Product
    Open Projects Network Ircd
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 18, 2001Format string vulnerability in XChat 1.2.x allows remote attackers to execute arbitrary code via a malformed nickname.CVE-2001-0792 · Other software · Xchat · reported by MITREHigh 7.5

    Format string vulnerability in XChat 1.2.x allows remote attackers to execute arbitrary code via a malformed nickname.

    Product
    Xchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 22, 2001Spytech Spynet Chat Server 6.5 allows a remote attacker to create a denial of service (crash) via a large number of connections to port 6387.CVE-2001-0581 · Other software · Spytech · reported by MITREMedium 5

    Spytech Spynet Chat Server 6.5 allows a remote attacker to create a denial of service (crash) via a large number of connections to port 6387.

    Product
    Spynet Chat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 14, 2001Directory traversal vulnerability in Faust Informatics Freestyle Chat server prior to 4.1 SR3 allows a remote attacker to read arbitrary files via a specially cCVE-2001-0615 · Other software · Faust Informatics · reported by MITREMedium 5

    Directory traversal vulnerability in Faust Informatics Freestyle Chat server prior to 4.1 SR3 allows a remote attacker to read arbitrary files via a specially crafted URL which includes variations of a '..' (dot dot) attack such as '...' or '....'.

    Product
    Freestyle Chat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 14, 2001Faust Informatics Freestyle Chat server prior to 4.1 SR3 allows a remote attacker to create a denial of service via a URL request which includes a MS-DOS deviceCVE-2001-0616 · Other software · Faust Informatics · reported by MITREMedium 5

    Faust Informatics Freestyle Chat server prior to 4.1 SR3 allows a remote attacker to create a denial of service via a URL request which includes a MS-DOS device name (e.g., GET /aux HTTP/1.0).

    Product
    Freestyle Chat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 7, 2001Multiple vulnerabilities in phpMyChat before 0.14.5 exist in (1) input.php3, (2) handle_inputH.php3, or (3) index.lib.php3 with unknown consequences, possibly rCVE-2001-1357 · Websites & servers · Phpheaven · reported by MITREHigh 7.5

    Multiple vulnerabilities in phpMyChat before 0.14.5 exist in (1) input.php3, (2) handle_inputH.php3, or (3) index.lib.php3 with unknown consequences, possibly related to user spoofing or improperly initialized variables.

    Product
    Phpmychat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 7, 2001Vulnerabilities in phpMyChat before 0.14.4 allow local and possibly remote attackers to gain privileges by specifying an alternate library file in the L (localiCVE-2001-1358 · Websites & servers · Phpheaven · reported by MITREHigh 7.2

    Vulnerabilities in phpMyChat before 0.14.4 allow local and possibly remote attackers to gain privileges by specifying an alternate library file in the L (localization) parameter.

    Product
    Phpmychat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jan 9, 2001The installation of VolanoChatPro chat server sets world-readable permissions for its configuration file and stores the server administrator passwords in plaintCVE-2000-1148 · Other software · Volano LLC · reported by MITREMedium 4.6

    The installation of VolanoChatPro chat server sets world-readable permissions for its configuration file and stores the server administrator passwords in plaintext, which allows local users to gain privileges on the server.

    Product
    Volanochatpro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 20, 2000IRC Xchat client versions 1.4.2 and earlier allows remote attackers to execute arbitrary commands by encoding shell metacharacters into a URL which XChat uses tCVE-2000-0787 · Other software · Xchat · reported by MITREHigh 7.5

    IRC Xchat client versions 1.4.2 and earlier allows remote attackers to execute arbitrary commands by encoding shell metacharacters into a URL which XChat uses to launch a web browser.

    Product
    Xchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 25, 2000LeafChat 1.7 IRC client allows a remote IRC server to cause a denial of service by rapidly sending a large amount of error messages.CVE-2000-0601 · Other software · Leafdigital · reported by MITREMedium 5

    LeafChat 1.7 IRC client allows a remote IRC server to cause a denial of service by rapidly sending a large amount of error messages.

    Product
    Leafchat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 10, 2000Buffer overflow in ircII 4.4 IRC client allows remote attackers to execute commands via the DCC chat capability.CVE-2000-0183 · Other software · Michael Sandrof · reported by MITREMedium 5.1

    Buffer overflow in ircII 4.4 IRC client allows remote attackers to execute commands via the DCC chat capability.

    Product
    Ircii
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 4, 1999Microsoft NetMeeting 2.1 allows one client to read the contents of another client's clipboard via a CTRL-C in the chat box when the box is empty.CVE-1999-1097 · Computers, phones & browsers · Microsoft · reported by MITREMedium 6.4

    Microsoft NetMeeting 2.1 allows one client to read the contents of another client's clipboard via a CTRL-C in the chat box when the box is empty.

    Product
    Netmeeting
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.

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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