CVE-2009-3622

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.

• CWE-310

• http://codes.zerial.org/php/wp-trackbacks_dos.phpsBroken Link
• http://marc.info/?l=oss-security&m=125612393329041&w=2Mailing List, Third Party Advisory
• http://marc.info/?l=oss-security&m=125614592004825&w=2Mailing List, Third Party Advisory
• http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/Exploit, Issue Tracking, Vendor Advisory
• http://seclists.org/fulldisclosure/2009/Oct/263Exploit, Mailing List, Third Party Advisory
• http://secunia.com/advisories/37088Third Party Advisory
• http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.htmlThird Party Advisory
• http://securitytracker.com/id?1023072Third Party Advisory, VDB Entry
• http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/Vendor Advisory
• http://www.osvdb.org/59077Broken Link
• http://www.vupen.com/english/advisories/2009/2986Patch, Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=530056Issue Tracking
• https://exchange.xforce.ibmcloud.com/vulnerabilities/53884Third Party Advisory, VDB Entry
• http://codes.zerial.org/php/wp-trackbacks_dos.phpsBroken Link
• http://marc.info/?l=oss-security&m=125612393329041&w=2Mailing List, Third Party Advisory
• http://marc.info/?l=oss-security&m=125614592004825&w=2Mailing List, Third Party Advisory
• http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/Exploit, Issue Tracking, Vendor Advisory
• http://seclists.org/fulldisclosure/2009/Oct/263Exploit, Mailing List, Third Party Advisory
• http://secunia.com/advisories/37088Third Party Advisory
• http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.htmlThird Party Advisory
• http://securitytracker.com/id?1023072Third Party Advisory, VDB Entry
• http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/Vendor Advisory
• http://www.osvdb.org/59077Broken Link
• http://www.vupen.com/english/advisories/2009/2986Patch, Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=530056Issue Tracking
• https://exchange.xforce.ibmcloud.com/vulnerabilities/53884Third Party Advisory, VDB Entry

Published

Oct 23, 2009

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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