{"cve":"CVE-2009-3890","nvd":{"published":"2009-11-17T18:30:00.313","modified":"2026-06-16T23:12:34.983","status":"Modified","description":"Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions.php in WordPress before 2.8.6, when a certain configuration of the mod_mime module in the Apache HTTP Server is enabled, allows remote authenticated users to execute arbitrary code by posting an attachment with a multiple-extension filename, and then accessing this attachment via a direct request to a wp-content/uploads/ pathname, as demonstrated by a .php.jpg filename.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-94"],"references":["http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.html","http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.html","http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.html","http://core.trac.wordpress.org/ticket/11122","http://secunia.com/advisories/37332"],"products":["wordpress:wordpress"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-3890","score":0.08729,"percentile":0.95147,"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."]}