Security advisories
Here you will find a list of vulnerabilities that have already been found and fixed in Contao. If you think that you have found a security issue in Contao, please report it according to our security policy.
Insufficient BBCode sanitization
by Leo Feyer
Date: 2024-04-09
CVE ID: CVE-2024-28234
If BBCode is enabled for comments, users can inject CSS styles.
Affected versions
Contao 4.0
Contao 4.1
Contao 4.2
Contao 4.3
Contao 4.4
Contao 4.5
Contao 4.6
Contao 4.7
Contao 4.8
Contao 4.9
Contao 4.10
Contao 4.11
Contao 4.12
Contao 4.13 up to 4.13.39
Contao 5.0
Contao 5.1
Contao 5.2
Contao 5.3 up to 5.3.3
Suggested solution
Upgrade to Contao 4.13.40 or 5.3.4.
Workaround
Disable BBCode for comments.
More information
https://github.com/contao/contao/security/advisories/GHSA-j55w-hjpj-825g
