CVE-2025-65960
November 25, 2025
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, back end users with precise control over the contents of template closures can execute arbitrary PHP functions that do not have required parameters. This issue has been patched in versions 4.13.57, 5.3.42, and 5.6.5. A workaround for this issue involves manually patching the Contao\Template::once() method.
Affected Packages
contao/core-bundle (PHP):
Affected version(s) >=4.0.0 <4.13.57Fix Suggestion:
Update to version 4.13.57contao/core-bundle (PHP):
Affected version(s) >=5.4.0 <5.6.5Fix Suggestion:
Update to version 5.6.5contao/core-bundle (PHP):
Affected version(s) >=5.0.0 <5.3.42Fix Suggestion:
Update to version 5.3.42Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.6
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Insufficient Type Distinction
EPSS
Base Score:
0.02
