CVE-2025-8285CWE-862

Unauthorized Channel Subscription Creation in Mattermost Confluence Plugin

Medium · published August 11, 2025

CVSS v3.1
4.0
EPSS
0%
Percentile
8.9
In the wild
Unconfirmed
What it is

Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to create channel subscription without proper access to the channel via API call to the create channel subscription endpoint.

The record
Technical detail
CVSS v3.1
4.0 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00197 · 8.9th percentile
Weakness
CWE-862 · Missing Authorization
Published
2025-08-11T18:57Z
EPSS history
Timeline
  • 11 AUG 18:57Z
    Unauthorized Channel Subscription Creation in Mattermost Confluence Plugin
    cvelistv5