{"cve":"CVE-2013-4567","nvd":{"published":"2013-12-13T18:07:54.063","modified":"2026-06-16T23:57:27.990","status":"Modified","description":"Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via a \\b (backspace) character in CSS.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2013-December/122998.html","http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123011.html","http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-November/000135.html","http://secunia.com/advisories/57472","http://www.debian.org/security/2014/dsa-2891"],"products":["mediawiki:mediawiki"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4567","score":0.01349,"percentile":0.71485,"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."]}