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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.

PUBLISHED Reserved 2025-11-18 | Published 2025-11-25 | Updated 2025-11-25 | Assigner GitHub_M




LOW: 3.3CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-87: Improper Neutralization of Alternate XSS Syntax

Product status

>= 4.0.0, < 4.13.57
affected

>= 5.0.0-RC1, < 5.3.42
affected

>= 5.4.0-RC1, < 5.6.5
affected

References

github.com/...contao/security/advisories/GHSA-68q5-78xp-cwwc

contao.org/...y-advisories/cross-site-scripting-in-templates

cve.org (CVE-2025-65961)

nvd.nist.gov (CVE-2025-65961)

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