CVE-2022-36020 MEDIUM

CVE-2022-36020: Bypass of Cross-Site Scripting Protection in typo3/html-sanitizer

Vendor Typo3
Product html-sanitizer
Weakness CWE-79 · XSS
Published September 13, 2022
Last update April 23, 2025
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 13, 2022 CVE published
April 23, 2025 Record updated

Related vulnerabilities

04Related CVE

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