CVE-2026-90907: Joomla!

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Joomla! Core - [20260902] - Core - Unauthorized user account creation via profile.save controller in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The profile.save controller did not check the login state of a user, allowing the creation of guest-level users on sites without active user registration.

Affected products

• Joomla! Joomla!: from 1.5.0, before 5.4.8 (fixed in 5.4.8); from 6.0.0, before 6.1.3 (fixed in 6.1.3)

Published 2026-09-29. Last modified 2026-10-06.