Joomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper access check allows unauthorized users to perform mutation actions in webservice endpoints, where the same mutation was restricted in the backend UI.
The CVSS severity warrants an early asset and exposure review.
Joomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper access check allows unauthorized users to perform mutation actions in webservice endpoints, where the same mutation was restricted in the backend UI.
Confirm exposure before applying a vendor-supported change.
Confirm that Joomla! Project Joomla! CMS and an affected version are present.
Combine exploitation signals with asset exposure and business criticality.
Follow the vendor advisory or supported update path and preserve rollback options.
Recheck the version, service health, access paths, and relevant logs.
