CVE-2026-90913

Name of the Vulnerable Software and Affected Versions Joomla! Core versions 4.0.0 through 5.4.8 Joomla! Core versions 6.0.0 through 6.1.3

Description Improper Access Control List (ACL) checks in webservice endpoints allow unauthorized users to perform mutation actions. ACL is a mechanism used to define permissions and restrict access to specific resources or functions within a system.

Recommendations Update Joomla! Core versions 4.0.0 through 5.4.8 to a version newer than 5.4.8. Update Joomla! Core versions 6.0.0 through 6.1.3 to a version newer than 6.1.3.