CVE-2022-36020

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in packagist/typo3/cms-core

Identifiers

GHSA-47m6-46mj-p235, CVE-2022-36020

Package Slug

packagist/typo3/cms-core

Vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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.

Affected Versions

All versions starting from 10.0.0 before 10.4.32, all versions starting from 11.0.0 before 11.5.16

Solution

Upgrade to versions 10.4.32, 11.5.16 or above.

Last Modified

2022-09-19

source