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](https://github.com/contao/contao/issues/new/choose).

How to fix CVE-2025-29790

To remediate CVE-2025-29790, upgrade the affected package to a fixed version below.

• —upgrade to 4.13.54 or later

Is CVE-2025-29790 being exploited?

Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• >= 4.0.0, < 4.13.54

CVSS scores

References (4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2025-29790
• PATCHgithub.com/contao/contao
• WEBcontao.org/en/security-advisories/cross-site-scripting-through-svg-uploads
• WEBgithub.com/contao/contao/security/advisories/GHSA-vqqr-fgmh-f626