{"id":"CVE-2026-109206","revision":"e0c608663b26448e99d5a2d4b03c0c80","records":[{"revision":"e0c608663b26448e99d5a2d4b03c0c80","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109206","aliases":[],"title":"LogicalDOC Community Edition through 9.3 Username Enumeration via AvatarServlet","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.","state":0,"publishedAt":"2026-10-12T13:39:47.896+00:00","modifiedAt":"2026-10-13T15:18:15.204+00:00","affected":[{"ecosystem":"Vendor product","name":"LogicalDOC Community Edition","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"LogicalDOC\",\n                    \"product\": \"LogicalDOC Community Edition\",\n                    \"repo\": \"https://github.com/logicaldoc/community\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"9.3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/logicaldoc/community/discussions/119","https://github.com/logicaldoc/community/commit/4e93a69526ae7fe50f670b85b3fc57181f3de3f7","https://github.com/logicaldoc/community/blob/9.3/logicaldoc-webapp/src/main/java/com/logicaldoc/web/AvatarServlet.java#L63","https://github.com/logicaldoc/community","https://www.vulncheck.com/advisories/logicaldoc-community-edition-through-9.3-username-enumeration-via-avatarservlet"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109206","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109206","identifiers":["CVE-2026-109206"]},"retained":false,"historicalAffected":[]}],"coverage":[]}