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certfr-2022-avi-813 — De multiples vulnérabilités ont été découvertes dans Typo3. Certaines d'entre elles permettent à un attaquant de provoq…

2026-10-07T19:21:00.606476+00:00

certfr-2022-avi-813

EUVD-2026-233727

2026-10-07T19:21:00.606560+00:00

EUVD-2026-233727

fkie_cve-2022-36020

2026-10-07T19:21:00.606576+00:00

The typo3/html-sanitizer package is an HTML sanitizer, written in PHP, aiming to provide XSS-safe markup based on explicitly allowed tags, attributes and values. Due to a parsing issue in the upstream package `masterminds/html5`, malicious markup used in a sequence with special HTML comments cannot be filtered and sanitized. This allows for a bypass of the cross-site scripting mechanism of `typo3/html-sanitizer`. This issue has been addressed in versions 1.0.7 and 2.0.16 of the `typo3/html-sanitizer` package. Users are advised to upgrade. There are no known workarounds for this issue.

GHSA-47m6-46mj-p235 — TYPO3 HTML Sanitizer Bypasses Cross-Site Scripting Protection

2026-10-07T19:21:00.606608+00:00

Affected: Packagist: typo3/html-sanitizer, Packagist: typo3/cms-core, Packagist: typo3/cms

> ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (5.7)

### Problem Due to a parsing issue in upstream package [`masterminds/html5`](https://packagist.org/packages/masterminds/html5), malicious markup used in a sequence with special HTML comments cannot be filtered and sanitized. This allows to by-pass the cross-site scripting mechanism of `typo3/html-sanitizer`.

### Solution Update to `typo3/html-sanitizer` versions 1.0.7 or 2.0.16 that fix the problem described.

### Credits Thanks to David Klein who reported this issue, and to TYPO3 security team member Oliver Hader who fixed the issue.

gsd-2022-36020

2026-10-07T19:21:00.606645+00:00

gsd-2022-36020