Home/CVE/Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and
CVE

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

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.

MEDIUM · CVSS 5.4 EPSS 0.00533
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

3
contao>= 4.0.0 and < 4.13.53
contao>= 5.0.0 and < 5.3.30
contao>= 5.4.0 and < 5.5.6
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist contao/core-bundle MEDIUM fixed in 4.13.54
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Mar 2025 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://contao.org/en/security-advisories/cross-site-scripting-through-svg-uploadsVendor Advisory
https://github.com/contao/contao/security/advisories/GHSA-vqqr-fgmh-f626PatchThird Party Advisory
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