CVE-2022-36020 Information

Description

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.

Reference

https://packagist.org/packages/masterminds/html5 https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-47m6-46mj-p235 https://packagist.org/packages/typo3/html-sanitizer https://github.com/TYPO3/html-sanitizer/commit/60bfdc7f9b394d0236e16ee4cea8372a7defa493