{"id":"GHSA-mm79-jhqm-9j54","aliases":["BIT-typo3-2023-47125","CVE-2023-47125"],"title":"Bypassing Cross-Site Scripting Protection in TYPO3 HTML Sanitizer","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\nDOM processing instructions are not handled correctly. 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 1.5.3 or 2.1.4 that fix the problem described.\n\n### Credits\nThanks to Yaniv Nizry and Niels Dossche who reported this issue, and to TYPO3 core & security team member Oliver Hader who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2023-007](https://typo3.org/security/advisory/typo3-core-sa-2023-007)\n* [Context & Details at `masterminds/html5`](https://github.com/Masterminds/html5-php/issues/241)","severity":"medium","score":4.7,"published":"2023-11-14T20:33:27.000Z","modified":"2026-09-10T03:50:04.276Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"typo3/html-sanitizer","ranges":[{"events":[{"introduced":"1.0.0"},{"fixed":"1.5.3"}],"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","v1.5.1","v1.5.2"],"fixed":["1.5.3"]},{"ecosystem":"Packagist","name":"typo3/html-sanitizer","ranges":[{"events":[{"introduced":"2.0.0"},{"fixed":"2.1.4"}],"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","v2.1.2","v2.1.3"],"fixed":["2.1.4"]}],"references":["https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-mm79-jhqm-9j54","https://nvd.nist.gov/vuln/detail/CVE-2023-47125","https://github.com/TYPO3/html-sanitizer/commit/b8f90717251d968c49dc77f8c1e5912e2fbe0dff","https://github.com/TYPO3/html-sanitizer","https://typo3.org/security/advisory/typo3-core-sa-2023-007"],"sources":[{"name":"OSV","id":"GHSA-mm79-jhqm-9j54","modified":"2026-09-10T03:50:04.276093579Z","url":"https://osv.dev/vulnerability/GHSA-mm79-jhqm-9j54"}],"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}]}