CVE-2021-20876: Groupsession

Medium severity, CVSS 6.8. EPSS: 1% chance of exploitation in the next 30 days.

Path traversal vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows an attacker with an administrative privilege to obtain sensitive information stored in the hierarchy above the directory on the published site's server via unspecified vectors.

Affected products

• Groupsession Groupsession: up to and including 5.1.1

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