CVE-2021-26030: Joomla!

Medium severity, CVSS 6.1. EPSS: 82.3% chance of exploitation in the next 30 days.

An issue was discovered in Joomla! 3.0.0 through 3.9.25. Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error page

Affected products

• Joomla! Joomla!: from 3.0.0, up to and including 3.9.25

Published 2021-04-14. Last modified 2026-06-17.