---
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: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-22
vendor: joomla
product: joomla!
affected:
  - 'joomla! >= 4.0.0, < 5.4.8'
  - 'joomla! >= 6.0.0, < 6.1.3'
patched:
  - joomla! 6.1.3
published: '2026-09-29'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T16:33:43.157'
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
epss: 0.00345
epssPercentile: 0.28194
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-30T15:06:38.308703Z'
scores:
  nvd: 6.5
  cna: 7
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.

## Affected

- `joomla! >= 4.0.0, < 5.4.8`
- `joomla! >= 6.0.0, < 6.1.3`

## Remediation

Upgrade past the affected range:

- `joomla! 6.1.3`