CVE-2025-61950: Groupsession

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

In GroupSession, a Circular notice can be created with its memo field non-editable, but the authorization check is improperly implemented. With some crafted request, a logged-in user may alter the memo field. The affected products and versions are GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2.

Affected products

• Groupsession Groupsession: before 5.3.0 (fixed in 5.3.0); before 5.3.2 (fixed in 5.3.2); before 5.3.3 (fixed in 5.3.3)

Published 2025-12-12. Last modified 2026-10-07.