• Project: Joomla!
• SubProject: CMS
• Impact: Low
• Severity: Low
• Versions: 3.0.0 - 3.9.27
• Exploit type: XSS
• Reported Date: 2021-05-29
• Fixed Date: 2021-07-06
• CVE Number: CVE-2021-26035

Description

Inadequate escaping in the Rules field of the JForm API leads to a XSS vulnerability.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.27

Solution

Upgrade to version 3.9.28

Contact

The JSST at the Joomla! Security Centre.