{"id":"CVE-2026-47344","summary":"TYPO3 HTML Sanitizer allows Cross-Site Scripting","details":"When ALLOW_INSECURE_RAW_TEXT is enabled, whitespace-variant closing tags (e.g., \u003c/style\\t\u003e) are not recognized by the sanitizer but accepted by browsers as valid end tags, allowing subsequent content to escape sanitization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.","aliases":["GHSA-jvf5-rxvv-3mcg"],"modified":"2026-07-15T01:48:58.390045768Z","published":"2026-06-08T19:03:19.826Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47344.json","cna_assigner":"TYPO3","cwe_ids":["CWE-436","CWE-79"]},"references":[{"type":"WEB","url":"https://packagist.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47344.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47344"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2026-006"},{"type":"FIX","url":"https://github.com/TYPO3/html-sanitizer/commit/bd1a88d9b5a5f67f1120ec41084e9c1a0675641c"},{"type":"PACKAGE","url":"https://github.com/TYPO3/html-sanitizer"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/typo3/html-sanitizer","events":[{"introduced":"0"},{"fixed":"8b5d0be44ded457ca993ec9ca93d859941c63764"},{"fixed":"bd1a88d9b5a5f67f1120ec41084e9c1a0675641c"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.3.2"}],"source":["DESCRIPTION","REFERENCES"]}}],"versions":["v2.3.1","v2.3.0","v2.2.0","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1.0","v2.0.16","v2.0.15","v2.0.14","v2.0.13","v2.0.12","v2.0.11","v2.0.10","v2.0.9","v2.0.8","v2.0.7","v2.0.6","v2.0.5","v2.0.4","v2.0.3","v2.0.2","v2.0.1","v2.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47344.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}]}