CVE-2025-3611— Improper Access Control in Mattermost allows System Managers to view team details despite role restrictions
Quick assessment
Affected
Mattermost Mattermost
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.
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost 10.7.0及之前的10.7.x版本、10.5.3及之前的10.5.x版本和9.11.12及之前的9.11.x版本存在安全漏洞，该漏洞源于访问控制限制不当，可能导致信息泄露。
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
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I. Basic Information for CVE-2025-3611
Vulnerability Information
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Vulnerability Title
Improper Access Control in Mattermost allows System Managers to view team details despite role restrictions
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly enforce access control restrictions for System Manager roles, allowing authenticated users with System Manager privileges to view team details they should not have access to via direct API requests to team endpoints, even when explicitly configured with 'No access' to Teams in the System Console.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost 10.7.0及之前的10.7.x版本、10.5.3及之前的10.5.x版本和9.11.12及之前的9.11.x版本存在安全漏洞，该漏洞源于访问控制限制不当，可能导致信息泄露。
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 |
|---|---|---|---|---|
| Mattermost | Mattermost | 10.7.0 | - |
|
II. Public POCs for CVE-2025-3611
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2025-05-30 · 4 CVEs total
| CVE-2025-3230 | 5.4 MEDIUM | Bypass of System Admin User Deactivation Controls for Personal Access Tokens in Mattermost |
| CVE-2025-2571 | 4.2 MEDIUM | Google OAuth Authentication Bypass for Converted Bot Accounts |
| CVE-2025-1792 | 3.1 LOW | Improper Access Control in Mattermost Channel Member API |
IV. Related Vulnerabilities
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CVE-2026-9816
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CVE-2026-10080
Boards plugin panics on WebSocket command with non-string fi
Same vendor: Mattermost
-
CVE-2026-75587
Plaintext pre-auth secret exposure via Desktop App diagnosti -
CVE-2026-9693
Mattermost thread memberships persist after team removal, ex -
CVE-2026-9859
Mattermost Boards plugin didn’t enforce role-based authoriza -
CVE-2026-9816
Insufficient server-side validation of board member role fie -
CVE-2026-10080
Boards plugin panics on WebSocket command with non-string fi
Same weakness: CWE-863
V. Comments for CVE-2025-3611
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