CVE-2021-4072: Elgg

Medium severity, CVSS 5.4. EPSS: 0.7% chance of exploitation in the next 30 days.

elgg is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected products

• Elgg Elgg: before 3.3.24 (fixed in 3.3.24)

Published 2021-12-24. Last modified 2026-06-17.