{"id":"CVE-2009-3622","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-3622","generatedAt":"2026-10-27T19:39:30.557Z","title":"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…","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.","published":"2009-10-23T18:30:01.000Z","lastModified":"2026-06-16T23:12:02.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":4.3,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P"},"cwe":["CWE-310"],"affected":["wordpress/wordpress"],"epss":{"score":0.05827,"percentile":0.93103,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (5.83%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://codes.zerial.org/php/wp-trackbacks_dos.phps","tags":["Broken Link"],"source":"secalert@redhat.com"},{"url":"http://marc.info/?l=oss-security&m=125612393329041&w=2","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://marc.info/?l=oss-security&m=125614592004825&w=2","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/","tags":["Exploit","Issue Tracking","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2009/Oct/263","tags":["Exploit","Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/37088","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://securitytracker.com/id?1023072","tags":["Third Party Advisory","VDB Entry"],"source":"secalert@redhat.com"},{"url":"http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.osvdb.org/59077","tags":["Broken Link"],"source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2009/2986","tags":["Patch","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=530056","tags":["Issue Tracking"],"source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/53884","tags":["Third Party Advisory","VDB Entry"],"source":"secalert@redhat.com"},{"url":"http://codes.zerial.org/php/wp-trackbacks_dos.phps","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=oss-security&m=125612393329041&w=2","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=oss-security&m=125614592004825&w=2","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/","tags":["Exploit","Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2009/Oct/263","tags":["Exploit","Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/37088","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://securitytracker.com/id?1023072","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/59077","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/2986","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=530056","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/53884","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-3622","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}