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Findings

CVE-2026-90916

[20260906] - Core - Improper ACL checks in content history comparison view

Published Sep 25, 2026 · Joomla Joomla

Project: Joomla! SubProject: CMS Impact: Low Severity: Low Probability: Low Versions: 4.0.0-5.4.8,6.0.0-6.1.3 Exploit type: Incorrect Access Control Reported Date: 2026-07-15 Fixed Date: 2026-09-25 CVE Number: CVE-2026-90916 Description An improper access check allows unauthorized users to view inaccessible contents. Affected Installs Joomla! CMS versions 4.0.0-5.4.8, 6.0.0-6.1.3 Solution Upgrade to version 5.4.9, 6.1.4 Contact The JSST at the Joomla! Security Centre . Reported By: Arkadiusz Marta

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 25, 2026 · Joomla Security

    Detected

    Project: Joomla! SubProject: CMS Impact: Low Severity: Low Probability: Low Versions: 4.0.0-5.4.8,6.0.0-6.1.3 Exploit type: Incorrect Access Control Reported Date: 2026-07-15 Fixed Date: 2026-09-25 CVE Number: CVE-2026-90916 Description An improper access check allows unauthorized users to view inaccessible contents. Affected Installs Joomla! CMS versions 4.0.0-5.4.8, 6.0.0-6.1.3 Solution Upgrade

Sources

  • Joomla SecurityVendor advisoryCVE-2026-90916

    Project: Joomla! SubProject: CMS Impact: Low Severity: Low Probability: Low Versions: 4.0.0-5.4.8,6.0.0-6.1.3 Exploit type: Incorrect Access Control Reported Date: 2026-07-15 Fixed Date: 2026-09-25 CVE Number: CVE-2026-90916 Description An improper access check allows unauthorize

    developer.joomla.org