---
id: CVE-2026-90915
title: >-
  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, re…
summary: >-
  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, re…
severity: high
cvss: 7
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-22
vendor: Joomla! Project
product: Joomla! CMS
affected:
  - joomla_cms 4.0.0-5.4.8
  - joomla_cms 6.0.0-6.1.3
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T17:17:13.520'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90915'
references:
  - url: >-
      https://developer.joomla.org/security-centre/1085-20260905-core-arbitrary-directory-deletion-via-cache-purge-action.html
    label: security@joomla.org
  - url: 'https://www.joomla.org/'
    label: security@joomla.org
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-29T17:41:02.208Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.