CVE-2026-72531: CWE-284 Improper Access Control in Joomla! Project Joomla! CMS
CVE-2026-72531 is an improper access control vulnerability in Joomla! CMS affecting versions 4.0.0 through 5.4.7 and 6.0.0 through 6.1.2. It allows unauthorized users with high privileges to create custom fields for components they should not access via webservice endpoints. The vulnerability has a medium severity with a CVSS score of 5.1.
AI Analysis
Technical Summary
Joomla! CMS versions 4.0.0 to 5.4.7 and 6.0.0 to 6.1.2 contain an improper access control flaw (CWE-284) in the ACL checks for custom fields webservice endpoints. This flaw permits unauthorized users with high privileges to create fields for components that are otherwise inaccessible to them, potentially bypassing intended access restrictions.
Potential Impact
The vulnerability allows unauthorized creation of custom fields for components that should be inaccessible, which could lead to unauthorized data manipulation or configuration changes within Joomla! CMS. However, exploitation requires high privileges, and there is no indication of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor Joomla! Project advisories for updates and apply patches once available.
CVE-2026-72531: CWE-284 Improper Access Control in Joomla! Project Joomla! CMS
Description
CVE-2026-72531 is an improper access control vulnerability in Joomla! CMS affecting versions 4.0.0 through 5.4.7 and 6.0.0 through 6.1.2. It allows unauthorized users with high privileges to create custom fields for components they should not access via webservice endpoints. The vulnerability has a medium severity with a CVSS score of 5.1.
CVSS v4.0
Score 5.1medium
Affected software
Joomla! Project
Joomla! CMS
pkg:composer/joomla/joomla-cmsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Joomla! CMS versions 4.0.0 to 5.4.7 and 6.0.0 to 6.1.2 contain an improper access control flaw (CWE-284) in the ACL checks for custom fields webservice endpoints. This flaw permits unauthorized users with high privileges to create fields for components that are otherwise inaccessible to them, potentially bypassing intended access restrictions.
Potential Impact
The vulnerability allows unauthorized creation of custom fields for components that should be inaccessible, which could lead to unauthorized data manipulation or configuration changes within Joomla! CMS. However, exploitation requires high privileges, and there is no indication of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor Joomla! Project advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Joomla
- Date Reserved
- 2026-08-10T09:55:41.607Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a84862fc6e8be03327406c6
Added to database: 08/18/2026, 16:19:59 UTC
Last enriched: 09/11/2026, 21:32:47 UTC
Last updated: 10/02/2026, 10:04:19 UTC
Views: 64
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