{"id":"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.","aliases":["GHSA-p5j5-4j3q-8mq8"],"modified":"2026-08-12T03:51:35.311104327Z","published":"2026-06-08T19:04:08.337Z","database_specific":{"cna_assigner":"TYPO3","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47345.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/typo3/html-sanitizer","events":[{"introduced":"0"},{"fixed":"8b5d0be44ded457ca993ec9ca93d859941c63764"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.3.2"}],"source":["AFFECTED_FIELD","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-2026-47345.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}]}