{"id":"GHSA-59jf-3q9v-rh6g","aliases":["CVE-2023-38500"],"title":"By-passing Cross-Site Scripting Protection in HTML Sanitizer","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"MODERATE","description":"> ### CVSS: `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (4.4)\n\n### Problem\nDue to an encoding issue in the serialization layer, malicious markup nested in a `noscript` element was not encoded correctly. `noscript` is disabled in the default configuration, but might have been enabled in custom scenarios. This allows bypassing the cross-site scripting mechanism of [`typo3/html-sanitizer`](https://packagist.org/packages/typo3/html-sanitizer).\n\n### Solution\nUpdate to `typo3/html-sanitizer` versions 1.5.1 or 2.1.2 that fix the problem described.\n\n### Credits\nThanks to David Klein and Yaniv Nizry who reported this issue, and to TYPO3 security team members Oliver Hader and Benjamin Franzke who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2023-002](https://typo3.org/security/advisory/typo3-core-sa-2023-002)\n","severity":"medium","score":4.7,"published":"2023-07-25T18:27:16.000Z","modified":"2026-09-10T03:49:54.331Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"typo3/html-sanitizer","sources":[{"name":"OSV · GHSA-59jf-3q9v-rh6g","url":"https://osv.dev/vulnerability/GHSA-59jf-3q9v-rh6g"}],"ranges":[{"events":[{"introduced":"1.0.0"},{"fixed":"1.5.1"}],"type":"ECOSYSTEM"}],"versions":["v1.0.0","v1.0.1","v1.0.2","v1.0.3","v1.0.4","v1.0.5","v1.0.6","v1.0.7","v1.5.0"],"fixed":["1.5.1"]},{"ecosystem":"Packagist","name":"typo3/html-sanitizer","sources":[{"name":"OSV · GHSA-59jf-3q9v-rh6g","url":"https://osv.dev/vulnerability/GHSA-59jf-3q9v-rh6g"}],"ranges":[{"events":[{"introduced":"2.0.0"},{"fixed":"2.1.2"}],"type":"ECOSYSTEM"}],"versions":["v2.0.0","v2.0.1","v2.0.10","v2.0.11","v2.0.12","v2.0.13","v2.0.14","v2.0.15","v2.0.16","v2.0.2","v2.0.3","v2.0.4","v2.0.5","v2.0.6","v2.0.7","v2.0.8","v2.0.9","v2.1.0","v2.1.1"],"fixed":["2.1.2"]}],"sourceAffected":[],"references":["https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-59jf-3q9v-rh6g","https://nvd.nist.gov/vuln/detail/CVE-2023-38500","https://github.com/TYPO3/html-sanitizer/commit/e3026f589fef0be8c3574ee3f0a0bfbe33d7ebdb","https://github.com/TYPO3/html-sanitizer","https://typo3.org/security/advisory/typo3-core-sa-2023-002"],"sources":[{"name":"OSV","id":"GHSA-59jf-3q9v-rh6g","modified":"2026-09-10T03:49:54.331507355Z","url":"https://osv.dev/vulnerability/GHSA-59jf-3q9v-rh6g"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","score":4.7}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T09:15:31.408Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}