CVE-2022-36020CWE-79

Bypass of Cross-Site Scripting Protection in typo3/html-sanitizer

Medium · published September 13, 2022

CVSS v3.1
6.1
EPSS
1%
Percentile
56.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00824 · 56.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2022-09-13T16:55Z
EPSS history
Timeline
  • 13 SEP 16:55Z
    Bypass of Cross-Site Scripting Protection in typo3/html-sanitizer
    cvelistv5