CVE-2021-23128: Joomla!

Critical severity, CVSS 9.1. EPSS: 1.4% chance of exploitation in the next 30 days.

An issue was discovered in Joomla! 3.2.0 through 3.9.24. The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to 'random_bytes()' and its backport that is shipped within random_compat.

Affected products

• Joomla! Joomla!: from 3.2.0, before 3.9.25 (fixed in 3.9.25)

Published 2021-03-04. Last modified 2026-06-17.