CVE-2021-26032: Joomla!

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue was discovered in Joomla! 3.0.0 through 3.9.26. HTML was missing in the executable block list of MediaHelper::canUpload, leading to XSS attack vectors.

Affected products

• Joomla! Joomla!: from 3.0.0, up to and including 3.9.26

Published 2021-05-26. Last modified 2026-06-17.