Vulnerability · Published Mar 18, 2025 · Assigned by GitHub_M

CVE-2025-29790Contao allows cross-site scripting through SVG uploads

Medium 4.8

In plain English

A medium-severity cross-site scripting in contao from contao. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)4.8Medium

Exploit odds (30 days)0.2%top 86.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	contao/core-bundle	4.13.54	GHSA-vqqr-fgmh-f626
Packagist	contao/core-bundle	5.3.30	GHSA-vqqr-fgmh-f626
Packagist	contao/core-bundle	5.5.6	GHSA-vqqr-fgmh-f626

Affected products (as reported)

Vendor	Product	Versions
contao	contao	>= 4.0.0, < 4.13.54>= 5.0.0, < 5.3.30>= 5.4.0, < 5.5.6

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

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