CVE-2025-29790

mediumpriority · track · 22EPSS 0.002 · 13 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.22% (13th) EPSS

CVSS 5.4 · medium

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.1–5.4

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v4.04.8mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:Nsecondary · ENISA EU

v4.04.8mediumCVSS: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:Xsecondary · security-advisories@github.com

v4.01.1lowCVSS: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:U/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:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USCWE-79US

affected products (15)

Products and version ranges known to be affected.

Open Source Contao <4.13.54all versionscert_bundDE
Open Source Contao <5.3.30all versionscert_bundDE
Open Source Contao <5.5.6all versionscert_bundDE
Open Source Contao< 4.13.54cert_bundDE
Open Source Contao< 5.3.30cert_bundDE
Open Source Contao< 5.5.6cert_bundDE
contao contao4.0.0, → 4.13.54enisa_euvdEU
contao contao5.0.0, → 5.3.30enisa_euvdEU
contao contao5.4.0, → 5.5.6enisa_euvdEU
contao contao4.0.0 → 4.13.53nvdUScpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*
contao contao5.0.0 → 5.3.30nvdUScpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*
contao contao5.4.0 → 5.5.6nvdUScpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*
Packagist contao/core-bundle4.0.0 → 4.13.54osvUSpkg:composer/contao/core-bundle
Packagist contao/core-bundle5.3.0 → 5.3.30osvUSpkg:composer/contao/core-bundle
Packagist contao/core-bundle5.4.0 → 5.5.6osvUSpkg:composer/contao/core-bundle

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0576Contao: Schwachstelle ermöglicht Cross-Site ScriptingDeutsch2025-03-17csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Contao ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.
GHSA-vqqr-fgmh-f626Contao Vulnerable to Cross-Site Scripting (XSS) through SVG uploads2025-03-18ghsa · osvUS
### 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).

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2025-03-18modified 2026-06-17

references (8)

External citations — patches, advisories, analysis.

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