Access Control Bypass in Mattermost by Mattermost Inc.
CVE-2025-2564

4.3MEDIUM

Key Information:

Vendor
Mattermost
Status
Mattermost
Vendor
CVE Published:
16 April 2025

Summary

Mattermost versions 10.5.x (up to 10.5.1), 10.4.x (up to 10.4.3), and 9.11.x (up to 9.11.9) are susceptible to an access control bypass. This vulnerability permits authenticated users to access member details and information from archived channels, even when the system console's setting to allow such actions is disabled. As a result, sensitive information may be inadvertently exposed, posing a significant risk to user privacy and data security.

Affected Version(s)

Mattermost 10.5.0 <= 10.5.1

Mattermost 10.4.0 <= 10.4.3

Mattermost 9.11.0 <= 9.11.9

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

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