CVE-2026-69115

MEDIUM 6.5

OpenIM Server v3.8.3 Missing Authorization on User and Group Enumeration Endpoints

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

OpenIM Server v3.8.3 contains a missing authorization vulnerability that allows any authenticated user to access admin-only management API endpoints by submitting POST requests with a regular user bearer token to /user/get_users, /user/get_all_users_uid, and /group/get_groups. Attackers can exploit the absent authverify.CheckAdmin() call in the GetPaginationUsers, GetAllUserID, and GetGroups handlers to enumerate all platform user accounts including userIDs, nicknames, and manager level flags, as well as all groups including private groups the user has never joined, exposing group names, owner IDs, and member counts.

CWE	CWE-862
Vendor	openimsdk
Product	openim server (open-im-server)
Published	Aug 11, 2026
Last Updated	Aug 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

OpenIMSDK / OpenIM Server (open-im-server)

0 ≤ 3.8.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openimsdk/open-im-server github.com: https://github.com/openimsdk/open-im-server/issues/3778 github.com: https://github.com/openimsdk/open-im-server/commit/193870b2f938278b27a2d8347bd7e4db5f8f9dfc github.com: https://github.com/openimsdk/open-im-server/pull/3781 vulncheck.com: https://www.vulncheck.com/advisories/openim-server-missing-authorization-on-user-and-group-enumeration-endpoints

Credits

George Chen