{"id":"CVE-2009-3622","aliases":["DEBIAN-CVE-2009-3622","EUVD-2009-3603","GHSA-m4j7-w5vj-fwff"],"status":"published","title":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote...","description":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated \"UTF-8\" substrings, related to the mb_convert_encoding function in PHP.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.05827,"percentile":0.9321,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-310"],"published":"2009-10-23T18:00:00Z","modified":"2026-10-23T17:47:31Z","fixes":[{"ecosystem":"Debian:12","package":"wordpress","fixed_in":["2.8.5-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"wordpress","fixed_in":["2.8.5-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"wordpress","fixed_in":["2.8.5-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.5-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.5-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.5-1"}]}]}],"products":[{"vendor":"wordpress","product":"wordpress"}],"references":[{"url":"http://seclists.org/fulldisclosure/2009/Oct/263","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Exploit","Mailing List","Third Party Advisory","advisory","article","evidence"]},{"url":"http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/53884","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://marc.info/?l=oss-security\u0026m=125614592004825\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"http://codes.zerial.org/php/wp-trackbacks_dos.phps","tags":["x_refsource_MISC","x_transferred","Broken Link","web"]},{"url":"http://secunia.com/advisories/37088","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory","advisory"]},{"url":"http://www.osvdb.org/59077","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","Broken Link","web"]},{"url":"http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Vendor Advisory","advisory","evidence","report"]},{"url":"http://www.vupen.com/english/advisories/2009/2986","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=530056","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"http://marc.info/?l=oss-security\u0026m=125612393329041\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"http://securitytracker.com/id?1023072","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-3622"},{"url":"http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress"},{"url":"http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release"},{"url":"https://github.com/advisories/GHSA-m4j7-w5vj-fwff"},{"url":"https://security-tracker.debian.org/tracker/CVE-2009-3622","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-3622","description":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated \"UTF-8\" substrings, related to the mb_convert_encoding function in PHP.","status":"published","published":"2009-10-23T18:00:00Z","modified":"2024-08-07T06:31:10.551Z","updated_at":"2026-11-02T14:33:24.10565Z"}],"euvd":[{"id":"EUVD-2009-3603","description":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated \"UTF-8\" substrings, related to the mb_convert_encoding function in PHP.","status":"published","published":"2009-10-23T18:00:00Z","modified":"2024-08-07T06:31:10Z","updated_at":"2026-11-03T01:39:13.262818Z"}],"ghsa":[{"id":"GHSA-m4j7-w5vj-fwff","title":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote...","description":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated \"UTF-8\" substrings, related to the mb_convert_encoding function in PHP.","status":"published","published":"2022-05-02T03:46:54Z","modified":"2025-04-09T04:16:47Z","updated_at":"2026-11-02T15:01:01.075702Z"}],"nvd":[{"id":"CVE-2009-3622","description":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated \"UTF-8\" substrings, related to the mb_convert_encoding function in PHP.","status":"published","published":"2009-10-23T18:30:00.517Z","modified":"2026-06-16T23:12:02.38Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-310"],"updated_at":"2026-11-02T14:01:37.004244Z"}],"osv":[{"id":"CVE-2009-3622","description":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated \"UTF-8\" substrings, related to the mb_convert_encoding function in PHP.","status":"published","published":"2009-10-23T18:30:00Z","modified":"2026-04-10T03:40:56.953704Z","updated_at":"2026-11-02T15:43:57.714116Z"},{"id":"DEBIAN-CVE-2009-3622","description":"Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated \"UTF-8\" substrings, related to the mb_convert_encoding function in PHP.","status":"published","published":"2009-10-23T18:30:00.517Z","modified":"2026-10-23T17:47:31.745895575Z","updated_at":"2026-11-02T15:45:24.013654Z"}]}}