Vulnerability CVE-2024-28234
Published: 2024-04-09

Description:
Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.

 References:
https://github.com/contao/contao/security/advisories/GHSA-j55w-hjpj-825g
https://github.com/contao/contao/commit/55b995d8d35da0d36bc6a22c53fe6423ab0c4ae2
https://github.com/contao/contao/commit/6d42e667177c972ae7c219645593c262d7764ce2
https://contao.org/en/security-advisories/insufficient-bbcode-sanitization
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