CVE-2026-92226
Received Received - Intake

Improper ACL Checks in Joomla Core

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Joomla! Project

Description
Joomla! Core - [20260913] - Core - Improper ACL checks for varous webservice edit tasks in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to perform edit actions on otherwise uneditable items.

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-92226
EUVD
EUVD-2026-89087

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
joomla core From 4.0.0 (inc) to 5.4.8 (exc)
joomla core From 6.0.0 (inc) to 6.1.3 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

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Executive Summary

This vulnerability in Joomla! Core (CVE-2026-92226) involves improper access control list (ACL) checks for various webservice edit tasks. It affects Joomla versions 4.0.0 to 5.4.8 and 6.0.0 to 6.1.3. Unauthorized users can perform edit actions on items they should not be able to modify due to flawed permission validation.

Detection Guidance

To detect this vulnerability, check your Joomla version against affected ranges (4.0.0-5.4.8, 6.0.0-6.1.3). Use commands like 'composer show joomla/joomla' or check the Joomla admin panel under System > System Information. If vulnerable, update to versions 5.4.9 or 6.1.4 immediately.

Impact Analysis

This vulnerability allows attackers to modify restricted content or settings without proper authorization. It could lead to unauthorized changes in websites, data tampering, or potential privilege escalation. The impact depends on the Joomla site's configuration and the sensitivity of the edited items.

Compliance Impact

This vulnerability could lead to unauthorized data modifications, potentially violating integrity requirements in GDPR or HIPAA. If exploited, it may result in non-compliance due to unauthorized access or changes to sensitive data, though specific compliance impacts depend on the organization's use of Joomla.

Mitigation Strategies

Update Joomla to the latest patched version (5.4.9 or later for Joomla 4.x, 6.1.4 or later for Joomla 6.x) to address the improper ACL checks.

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