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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Logicaldoc Logicaldoc
cpe:2.3:a:logicaldoc:logicaldoc:*:*:*:*:community:*:*:*
|
— |
<= 9.3
|
References 5
https://github.com/logicaldoc/community/discussions/119
NVD
https://github.com/logicaldoc/community/commit/4e93a69526ae7fe50f670b85b3fc5718…
Patch Commit
https://github.com/logicaldoc/community/blob/9.3/logicaldoc-webapp/src/main/jav…
NVD
https://github.com/logicaldoc/community
NVD
https://www.vulncheck.com/advisories/logicaldoc-community-edition-through-9.3-u…
VulnCheck Advisory: LogicalDOC Community Edition through 9.3 Username Enumeration via AvatarServlet