CVE-2021-3964: Elgg

Medium severity, CVSS 5.9. EPSS: 0.8% chance of exploitation in the next 30 days.

elgg is vulnerable to Authorization Bypass Through User-Controlled Key

Affected products

• Elgg Elgg: before 3.3.22 (fixed in 3.3.22)

Published 2021-12-01. Last modified 2026-06-17.