Improper Access Control in Mattermost Channel Export Feature
CVE-2025-24526

4.3MEDIUM

Key Information:

Vendor
Mattermost
Status
Mattermost
Vendor
CVE Published:
24 February 2025

Summary

Certain versions of Mattermost exhibit a vulnerability where users can export contents of archived channels even when access should be restricted. Specifically, if the 'Allow users to view archived channels' setting is disabled, the flawed implementation still permits unauthorized users to export channel data. This lapse in access control can lead to unintended data exposure, requiring immediate attention to rectify the affected versions.

Affected Version(s)

Mattermost 10.1.0 <= 10.1.3

Mattermost 10.4.0 <= 10.4.1

Mattermost 9.11.0 <= 9.11.7

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

  • Vulnerability Reserved

Credit

Eva Sarafianou
.