CVE-2026-48899: Joomla!

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An improper access check allows privilege escalation through the com_users batch task.

Affected products

• Joomla! Joomla!: from 4.0.0, before 5.4.6 (fixed in 5.4.6); from 6.0.0, before 6.1.1 (fixed in 6.1.1)

Published 2026-05-26. Last modified 2026-07-24.