CVE-2026-109206: Logicaldoc Community Edition

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

LogicalDOC Community Edition through 9.3 contains a username enumeration vulnerability that allows unauthenticated attackers to identify valid accounts because the AvatarServlet (/avatar) performs no session validation. Attackers can supply usernames or numeric IDs in the userId parameter and compare 1x1 transparent images against real avatars to enumerate users and retrieve profile pictures.

Affected products

• Logicaldoc Logicaldoc Community Edition: up to and including 9.3

Published 2026-10-12. Last modified 2026-10-13.