CVE-2025-44004 HIGH

CVE-2025-44004: Unauthenticated Channel Subscription Creation 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 check the authorization of the user to the Mattermost instance which allows attackers to create a channel subscription without proper authorization via API call to the create channel subscription endpoint.

Key dates

02Disclosure timeline

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