CVE-2018-15882: Joomla!

Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days.

An issue was discovered in Joomla! before 3.8.12. Inadequate checks in the InputFilter class could allow specifically prepared phar files to pass the upload filter.

Affected products

• Joomla! Joomla!: before 3.8.12 (fixed in 3.8.12)

Published 2018-08-29. Last modified 2026-06-17.