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GHSA-47m6-46mj-p235

TYPO3 HTML Sanitizer Bypasses Cross-Site Scripting Protection

Source: GitHub Advisory Database (reviewed) Moderate CVE-2022-36020

Packages

EcosystemPackageAffectedFixed in
Packagist typo3/html-sanitizer >= 1.0.0, < 1.0.7 1.0.7
Packagist typo3/html-sanitizer >= 2.0.0, < 2.0.16 2.0.16
Packagist typo3/cms-core >= 10.0.0, < 10.4.32 10.4.32
Packagist typo3/cms-core >= 11.0.0, < 11.5.16 11.5.16
Packagist typo3/cms >= 10.0.0, < 10.4.32 10.4.32
Packagist typo3/cms >= 11.0.0, < 11.5.16 11.5.16

Details

As written in the advisory (Markdown source, shown as plain text).

> ### 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.

References

External links from the advisory. They lead to third-party sites.