CVE-2025-65961: contao XSS — Fix

Description

Contao is an Open Source CMS. From version 4.0.0 to before 4.13.57, before 5.3.42, and before 5.6.5, it is possible to inject code into the template output that will be executed in the browser in the front end and back end. This issue has been patched in versions 4.13.57, 5.3.42, and 5.6.5. A workaround for this issue involves not using the affected templates or patch them manually.

Is your site exposed to CVE-2025-65961?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

3.3

LOW

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

Weakness Type (CWE)

CWE-87 CWE-87

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
contao	contao	4.0.0 — 4.13.57
contao	contao	5.0.0 — 5.3.42
contao	contao	5.4.0 — 5.6.5

References

Advisories & Patches

https://contao.org/en/security-advisories/cross-site-scripting-in-templates https://github.com/contao/contao/security/advisories/GHSA-68q5-78xp-cwwc

Frequently Asked Questions

What is CVE-2025-65961? +

Contao is an Open Source CMS. From version 4.0.0 to before 4.13.57, before 5.3.42, and before 5.6.5, it is possible to inject code into the template output that will be executed in the browser in the front end and back end. This issue has been patched in versions 4.13.57, 5.3.42, and 5.6.5. A workaround for this issue involves not using the affected templates or patch them manually. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2025-65961? +

CVE-2025-65961 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-65961? +

CVE-2025-65961 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-2025-65961? +

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.

Related Vulnerabilities

CVE-2026-42458

Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform …

CVE-2025-27793

Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. In Vega prior to …

CVE-2026-55661

Tina is a headless content management system. In versions prior to @tinacms/mdx 2.1.7 and tinacms 3.9.3, rich-text parsing and the …

CVE-2025-54369

Node-SAML is a SAML library not dependent on any frameworks that runs in Node. In versions 5.0.1 and below, Node-SAML …

CVE-2026-54002

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins that use the writer …

CVE-2026-42235 9.6

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an unauthenticated attacker could register …

CVE-2025-65961