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Status published
Medium
CVE-2025-53910
Unauthorized Channel Subscription Edit in Mattermost Confluence Plugin
Vulnerability Description
Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to create a channel subscription without proper access to the channel via API call to the edit channel subscription endpoint.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Lorenzo Gallegos
References
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Affected Vendor
Mattermost
View all reports →Affected Software
Mattermost Confluence Plugin
Vulnerable Versions:
0, 1.5.0
Timeline
Official Publish:
August 11th, 2025
Last Modified:
August 11th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N