CVE-2025-29790

MEDIUM

Published Mar 18, 2025 Modified Nov 4, 2025 CWE-79

Description

Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
contao	contao	4.0.0 — 4.13.53
contao	contao	5.0.0 — 5.3.30
contao	contao	5.4.0 — 5.5.6

References

Advisories & Patches

https://contao.org/en/security-advisories/cross-site-scripting-through-svg-uploads https://github.com/contao/contao/security/advisories/GHSA-vqqr-fgmh-f626

Frequently Asked Questions

What is CVE-2025-29790? +

Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-29790? +

CVE-2025-29790 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-29790? +

CVE-2025-29790 affects products from contao, specifically: contao. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-29790? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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