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CVE-2025-65961

Contao is vulnerable to cross-site scripting in templates

Published: Nov 25, 2025Updated: Dec 3, 2025 Sources: CVE List NVD GHSACWE-87
NVD MITRE
3.3CVSSLOW
EPSS Score
0.1%
Top 96.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-87CWE-79

Affected Products

contaocontao
On-prem
Web & CMS Plugins / cms-core
contao/core-bundlePackagistOSS Libraries
contaooss-projectDEWeb & CMS Pluginsaka contao cms
packagistpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/contao/contao/security/advisories/GHSA-68q5-78xp-cwwc
github.com
https://contao.org/en/security-advisories/cross-site-scripting-in-templates
contao.org
https://nvd.nist.gov/vuln/detail/CVE-2025-65961
nvd.nist.gov
and 1 more references View all →

Timeline

Published
Nov 25, 2025
Last Updated
Dec 3, 2025

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