CVE-2018-17858: Joomla!

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

An issue was discovered in Joomla! before 3.8.13. com_installer actions do not have sufficient CSRF hardening in the backend.

Affected products

• Joomla! Joomla!: from 2.5.0, before 3.8.13 (fixed in 3.8.13)

Published 2018-10-09. Last modified 2026-06-17.