CVE-2026-90915: Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3
Published Sep 29, 2026
·Updated
Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 -An improper validation of the cache group name allowed path traverals in the file storage of the caching layer, resulting in arbitrary directory deletions.
Affected Software
1 affected component
Joomla joomla>=4.0.0<=5.4.8, >=6.0.0<=6.1.3
Event History
Sep 29, 2026
CVE Published
via MITRE·04:45 PM
Data Sourced
via MITRE·04:45 PM
DescriptionWeakness
Data Sourced
via NVD·05:17 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
Which Joomla versions are affected?
The affected ranges are Joomla 4.0.0 through 5.4.8 and Joomla 6.0.0 through 6.1.3.
2
What is the impact of successful exploitation?
Improper validation of a cache group name permits path traversal in the caching layer's file storage, which can result in arbitrary directory deletion.