Contao is vulnerable to remote code execution in template closures

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-65960
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-11-25 19:15:51 UTC
Updated2026-10-18 20:10:00 UTC
DescriptionContao 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.

Risk And Classification

Primary CVSS: v3.1 6.6 MEDIUM from [email protected]

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

Problem Types: CWE-351 | CWE-351 CWE-351: Insufficient Type Distinction

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Contao Contao All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Contao Contao affected >= 4.0.0, < 4.13.57 Not specified
CNA Contao Contao affected >= 5.0.0-RC1, < 5.3.42 Not specified
CNA Contao Contao affected >= 5.4.0-RC1, < 5.6.5 Not specified

References

ReferenceSourceLinkTags
contao.org/en/security-advisories/remote-code-execution-in-template-clos... [email protected] contao.org Vendor Advisory
github.com/contao/contao/security/advisories/GHSA-98vj-mm79-v77r [email protected] github.com Vendor Advisory
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