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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Logicaldoc Subscribe
Logicaldoc Subscribe

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/logicaldoc/community cve-icon cve-icon
https://github.com/logicaldoc/community/blob/9.3/logicaldoc-webapp/src/main/java/com/logicaldoc/web/AvatarServlet.java#L63 cve-icon cve-icon
https://github.com/logicaldoc/community/commit/4e93a69526ae7fe50f670b85b3fc57181f3de3f7 cve-icon cve-icon
https://github.com/logicaldoc/community/discussions/119 cve-icon cve-icon
https://www.vulncheck.com/advisories/logicaldoc-community-edition-through-9.3-username-enumeration-via-avatarservlet cve-icon cve-icon
History

Mon, 12 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
Description 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.
Title LogicalDOC Community Edition through 9.3 Username Enumeration via AvatarServlet
First Time appeared Logicaldoc
Logicaldoc logicaldoc
Weaknesses CWE-204
CPEs cpe:2.3:a:logicaldoc:logicaldoc:*:*:*:*:community:*:*:*
Vendors & Products Logicaldoc
Logicaldoc logicaldoc
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-12T13:39:47.896Z

Reserved: 2026-10-12T13:25:18.180Z

Link: CVE-2026-109206

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-12T14:17:11.427

Modified: 2026-10-12T14:17:11.427

Link: CVE-2026-109206

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-12T15:45:13Z

Weaknesses