CVE-2025-29790 json
Contao allows cross-site scripting through SVG uploads
published last yr. modified 4mo ago also EUVD-2025-6706 , GHSA-vqqr-fgmh-f626
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist contao/core-bundle 4.13.54, 5.3.30, 5.5.6
- contao contao 4.13.54, 5.3.30, 5.5.6
- contao contao_cms 4.13.54, 5.3.30, 5.5.6
Is CVE-2025-29790 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.8 | 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 |
| CNA | 4.0 | 4.8 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | contao/core-bundle | >=4.0.0, <4.13.54 >=5.3.0, <5.3.30 >=5.4.0, <5.5.6 |
4.13.54 5.3.30 5.5.6 |
Affected products
- contao contao
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/contao/contao/security/advisories/GHSA-vqqr-fgmh-f626
web, patch, third-party-advisory
-
contao.org
/en/security-advisories/cross-site-scripting-through-svg-uploads
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-29790
advisory
-
github.com
/contao/contao
package
Sources
- CVE List CVE-2025-29790
- GitHub Advisory GHSA-vqqr-fgmh-f626
- NVD CVE-2025-29790
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.