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Findings

CVE-2026-90914

[20260904] - Core - XSS in the generic media output layouts

Published Sep 25, 2026 · Joomla Joomla

Project: Joomla! SubProject: CMS Impact: Moderate Severity: Moderate Probability: Low Versions: 4.0.0-5.4.8,6.0.0-6.1.3 Exploit type: XSS Reported Date: 2026-08-13 Fixed Date: 2026-09-25 CVE Number: CVE-2026-90914 Description Lack of escaping leads to an XSS vulnerability in the generic audio and video output layouts. 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: Aria Akhavan

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: Moderate Severity: Moderate Probability: Low Versions: 4.0.0-5.4.8,6.0.0-6.1.3 Exploit type: XSS Reported Date: 2026-08-13 Fixed Date: 2026-09-25 CVE Number: CVE-2026-90914 Description Lack of escaping leads to an XSS vulnerability in the generic audio and video output layouts. Affected Installs Joomla! CMS versions 4.0.0-5.4.8, 6.0.0-6.1.3 Solution Upgrade

Sources

  • Joomla SecurityVendor advisoryCVE-2026-90914

    Project: Joomla! SubProject: CMS Impact: Moderate Severity: Moderate Probability: Low Versions: 4.0.0-5.4.8,6.0.0-6.1.3 Exploit type: XSS Reported Date: 2026-08-13 Fixed Date: 2026-09-25 CVE Number: CVE-2026-90914 Description Lack of escaping leads to an XSS vulnerability in the

    developer.joomla.org