CVE-2026-109206
LogicalDOC Community Edition through 9.3 Username Enumeration via AvatarServlet
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-204 |
| Vendor | logicaldoc |
| Product | logicaldoc community edition |
| Published | Oct 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
LogicalDOC / LogicalDOC Community Edition
0 ≤ 9.3
References
github.com: https://github.com/logicaldoc/community/discussions/119 github.com: https://github.com/logicaldoc/community/commit/4e93a69526ae7fe50f670b85b3fc57181f3de3f7 github.com: https://github.com/logicaldoc/community/blob/9.3/logicaldoc-webapp/src/main/java/com/logicaldoc/web/AvatarServlet.java#L63 github.com: https://github.com/logicaldoc/community vulncheck.com: https://www.vulncheck.com/advisories/logicaldoc-community-edition-through-9.3-username-enumeration-via-avatarservlet
Credits
ikram-4