{"id":"CVE-2026-47345","aliases":["GHSA-p5j5-4j3q-8mq8"],"url":"https://o3.security/vulnerability/CVE-2026-47345","summary":"TYPO3 HTML Sanitizer allows Cross-Site Scripting","details":"Namespace attributes are not encoded correctly during HTML serialization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.","published":"2026-06-08T19:04:08.337Z","modified":"2026-08-12T03:51:35.311104327Z","cvss":null,"epss":{"score":0.00366,"percentile":0.29275,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"typo3/html-sanitizer","fixedVersion":"2.3.2"}],"fix":{"url":"https://github.com/TYPO3/html-sanitizer/commit/8b5d0be44ded457ca993ec9ca93d859941c63764","label":"TYPO3/html-sanitizer@8b5d0be"},"references":[{"type":"WEB","url":"https://packagist.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47345.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47345"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2026-006"},{"type":"FIX","url":"https://github.com/TYPO3/html-sanitizer/commit/8b5d0be44ded457ca993ec9ca93d859941c63764"},{"type":"PACKAGE","url":"https://github.com/TYPO3/html-sanitizer"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:35.311104327Z"}}