{"cve":"CVE-2009-3622","nvd":{"published":"2009-10-23T18:30:00.517","modified":"2026-06-16T23:12:02.380","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-310"],"references":["http://codes.zerial.org/php/wp-trackbacks_dos.phps","http://marc.info/?l=oss-security&m=125612393329041&w=2","http://marc.info/?l=oss-security&m=125614592004825&w=2","http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/","http://seclists.org/fulldisclosure/2009/Oct/263"],"products":["wordpress:wordpress"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-3622","score":0.05827,"percentile":0.93155,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}