Vulnerability in Logicaldoc Community Edition
CVE-2026-109206
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.
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/logicaldoc/community/discussions/119 (technical-description)
- github.com/logicaldoc/community/commit/4e93a69526ae7fe50f670b85b3fc57181f3de3f7 (patch)
- github.com/logicaldoc/community/blob/9.3/logicaldoc-webapp/src/main/java/com/lo… (technical-description)
- github.com/logicaldoc/community (product)
- www.vulncheck.com/advisories/logicaldoc-community-edition-through-9.3-username-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109206?
- CVE-2026-109206 is a medium-severity vulnerability in Logicaldoc Community Edition, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-10-12.
- How severe is CVE-2026-109206?
- Medium severity. CVSS v3 base score is 5.3 out of 10.