CVE-2025-54478 HIGH

CVE-2025-54478: Unauthenticated Channel Subscription Edit in Mattermost Confluence Plugin

Vendor Mattermost
Product Mattermost Confluence Plugin
Weakness CWE-306 · Missing auth
Published August 11, 2025
Last update August 11, 2025
View on NVD All CVEs

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

Mattermost Confluence Plugin version <1.5.0 fails to enforce authentication of the user to the Mattermost instance which allows unauthenticated attackers to edit channel subscriptions via API call to the edit channel subscription endpoint.

Key dates

02Disclosure timeline

August 11, 2025 CVE published
August 11, 2025 Record updated