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Joomla! CMS Improper Access Control Vulnerability in Webservice Endpoints

Vulnerability

A vulnerability exists in Joomla! CMS versions 4.0.0 through 5.4.5 and 6.0.0 through 6.1.0, where an improper access check allows unauthorized users to access com_config webservice endpoints. This flaw arises from incorrect access control, potentially leading to unauthorized actions or data exposure via the affected webservice endpoints.

Impact

Exploitation of this vulnerability could result in unauthorized access to sensitive webservice endpoints, allowing attackers to manipulate or retrieve data they should not have access to.

Remediation

Users are advised to upgrade to Joomla! CMS version 5.4.6 or 6.1.1.

Added: May 26, 2026, 11:16 PM
Updated: May 26, 2026, 11:16 PM

Vulnerability Rating

Custom Algorithm
spread
7.6
impact
5.0
exploitability
7.6
remediation
7.7
relevance
9.6
threat
0.0
urgency
2.9
incentive
4.2

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.