CVE-2025-44004

Unauthenticated Channel Subscription Creation in Mattermost Confluence Plugin

State: Published
Severity: 7.2 High
Published: Aug 11, 2025
Updated: Aug 11, 2025
Reserved: Jul 28, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N	Mattermost

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
Mattermost Confluence PluginMattermost	before 1.5.0Affected 1.5.0Not affected

References

https://mattermost.com/security-updates

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