[20250902] – Core – User-Enumeration in passkey authentication method

• Project: Joomla!
• SubProject: CMS
• Impact: Moderate
• Severity: Low
• Probability: Low
• Versions: 4.0.0-4.4.13, 5.0.0-5.3.3
• Exploit type: User Enumeration
• Reported Date: 2025-09-04
• Fixed Date: 2025-09-30
• CVE Number: CVE-2025-54477

Description

Improper handling of authentication requests lead to a user enumeration vector in the passkey authentication method.

Affected Installs

Joomla! CMS versions 4.0.0-4.4.13, 5.0.0-5.3.3

Solution

Upgrade to version 4.4.14 or 5.3.4

Contact

The JSST at the Joomla! Security Centre.

Reported By:  Marco Schubert