GHSA-59jf-3q9v-rh6g
By-passing Cross-Site Scripting Protection in HTML Sanitizer
Quick fix
GHSA-59jf-3q9v-rh6g — typo3/html-sanitizer: upgrade to the fixed version with the command below.
composer require typo3/html-sanitizer:^1.5.1Details
> ### CVSS: `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (4.4)
### Problem Due to an encoding issue in the serialization layer, malicious markup nested in a `noscript` element was not encoded correctly. `noscript` is disabled in the default configuration, but might have been enabled in custom scenarios. This allows bypassing the cross-site scripting mechanism of [`typo3/html-sanitizer`](https://packagist.org/packages/typo3/html-sanitizer).
### Solution Update to `typo3/html-sanitizer` versions 1.5.1 or 2.1.2 that fix the problem described.
### Credits Thanks to David Klein and Yaniv Nizry who reported this issue, and to TYPO3 security team members Oliver Hader and Benjamin Franzke who fixed the issue.
### References * [TYPO3-CORE-SA-2023-002](https://typo3.org/security/advisory/typo3-core-sa-2023-002)
Are you affected?
Enter the version of the package you're using.
Affected packages
1.0.0Fixed in: 1.5.1composer require typo3/html-sanitizer:^1.5.12.0.0Fixed in: 2.1.2composer require typo3/html-sanitizer:^2.1.2References
- https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-59jf-3q9v-rh6g[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2023-38500[ADVISORY]
- https://github.com/TYPO3/html-sanitizer/commit/e3026f589fef0be8c3574ee3f0a0bfbe33d7ebdb[WEB]
- https://github.com/TYPO3/html-sanitizer[PACKAGE]
- https://typo3.org/security/advisory/typo3-core-sa-2023-002[WEB]