CVE-2025-54478

HIGH

Mattermost Confluence Plugin < 1.5.0 - Unauthenticated Channel Subscription Modification via API

Title source: llm

Description

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.

References (1)

Core 1

Core References

Vendor Advisory

https://mattermost.com/security-updates

Scores

CVSS v3 7.2

EPSS 0.0015

EPSS Percentile 34.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-306

Status published

Products (2)

mattermost/confluence < 1.5.0

mattermost/mattermost-plugin-confluence 0 - 1.5.0Go

Published Aug 11, 2025

Tracked Since Feb 18, 2026