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CVE-2026-69115— OpenIM Server v3.8.3 Missing Authorization on User and Group Enumeration Endpoints

Quick assessment

Affected
OpenIMSDK OpenIM Server (open-im-server)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenIMSDK是OpenIMSDK组织开源的一款即时通讯服务器软件。 OpenIMSDK 3.8.3版本存在授权问题漏洞，该漏洞源于缺少授权验证，导致已认证用户可通过提交普通用户令牌的POST请求访问管理员专用API端点（/user/get_users、/user/get_all_users_uid、/group/get_groups），枚举所有平台用户账号及群组信息。

CVSS 6.5 · Medium EPSS 0.30% · P22

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenIMSDK OpenIM Server (open-im-server) ≤ 3.8.3 affected
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I. Basic Information for CVE-2026-69115

Vulnerability Information
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Vulnerability Title
OpenIM Server v3.8.3 Missing Authorization on User and Group Enumeration Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
OpenIMSDK 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenIMSDK是OpenIMSDK组织开源的一款即时通讯服务器软件。 OpenIMSDK 3.8.3版本存在授权问题漏洞，该漏洞源于缺少授权验证，导致已认证用户可通过提交普通用户令牌的POST请求访问管理员专用API端点（/user/get_users、/user/get_all_users_uid、/group/get_groups），枚举所有平台用户账号及群组信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenIMSDK OpenIM Server (open-im-server) 0 ~ 3.8.3 -

II. Public POCs for CVE-2026-69115

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III. Intelligence Information for CVE-2026-69115

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Patches & Fixes for CVE-2026-69115 (2)

Vendor Advisories for CVE-2026-69115 (1)

Other References for CVE-2026-69115 (2)

IV. Related Vulnerabilities

Same weakness: CWE-862