Openim Server Open Im Server
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Missing authorization in OpenIM Server v3.8.3 allows any authenticated user to invoke admin-only REST API endpoints and enumerate the entire platform's user and group data. The GetPaginationUsers, GetAllUserID, and GetGroups RPC handlers in internal/rpc/user/user.go and internal/rpc/group/group.go lack the required authverify.CheckAdmin() guard, meaning a regular bearer token is sufficient to harvest all user IDs, nicknames, manager-level flags, and full group listings including private groups the caller has never joined. No public exploit has been identified at time of analysis, but the low attack complexity makes opportunistic exploitation trivial for any credentialed platform user.
Missing authorization in OpenIM Server v3.8.3 allows any authenticated user to invoke admin-only REST API endpoints and enumerate the entire platform's user and group data. The GetPaginationUsers, GetAllUserID, and GetGroups RPC handlers in internal/rpc/user/user.go and internal/rpc/group/group.go lack the required authverify.CheckAdmin() guard, meaning a regular bearer token is sufficient to harvest all user IDs, nicknames, manager-level flags, and full group listings including private groups the caller has never joined. No public exploit has been identified at time of analysis, but the low attack complexity makes opportunistic exploitation trivial for any credentialed platform user.