Stefan Wendhausen

**Name of the Vulnerable Software and Affected Versions** Joomla! Core versions 5.1.0 through 5.4.7 Joomla! Core versions 6.0.0 through 6.1.2 **Description** An improper access control check allows the injection of contact information for inaccessible contact items into schema.org snippets. Access Control List (ACL) is a mechanism used to manage permissions and restrict access to specific resources based on user roles. **Recommendations** Update Joomla! Core versions 5.1.0 through 5.4.7 to a version newer than 5.4.7. Update Joomla! Core versions 6.0.0 through 6.1.2 to a version newer than 6.1.2.