GHSA-vqqr-fgmh-f626Medium

Contao Vulnerable to Cross-Site Scripting (XSS) through SVG uploads

Published
March 18, 2025
Last Modified
March 19, 2025

🔗 CVE IDs covered (1)

CVE-2025-29790 →

📋 Description

Impact

Users can upload SVG files with malicious code, which is then executed in the back end and/or front end.

Patches

Update to Contao 4.13.54, 5.3.30 or 5.5.6.

Workarounds

Remove svg,svgz from the allowed upload file types in the system settings and from contao.editable_files in the config.yaml.

References

https://contao.org/en/security-advisories/cross-site-scripting-through-svg-uploads

For more information

If you have any questions or comments about this advisory, open an issue in contao/contao.

🎯 Affected products3

  • composer/contao/core-bundle:>= 4.0.0, < 4.13.54
  • composer/contao/core-bundle:>= 5.3.0, < 5.3.30
  • composer/contao/core-bundle:>= 5.4.0, < 5.5.6

🔗 References (4)