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[20240803] - Core - XSS in HTML Mail Templates

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Moderate
  • Versions: 4.0.0-4.4.6, 5.0.0-5.1.2
  • Exploit type: XSS
  • Reported Date: 2024-07-22
  • Fixed Date: 2024-08-20
  • CVE Number: CVE-2024-27186

Description

The mail template feature lacks an escaping mechanism, causing XSS vectors in multiple extensions.

Affected Installs

Joomla! CMS versions 4.0.0-4.4.6, 5.0.0-5.1.2

Solution

Upgrade to version 4.4.7 or 5.1.3

Contact

The JSST at the Joomla! Security Centre.

Reported By:  Elysee Franchuk