PT-2025-32584 · Mattermost · Mattermost Confluence Plugin

Lorenzo Gallegos · Published 2025-07-10 · Updated 2025-08-20 · CVE-2025-8285

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mattermost Confluence Plugin versions prior to 1.5.0

Description: The Mattermost Confluence Plugin does not verify user access to a channel, allowing attackers to create channel subscriptions without proper authorization via an API call to the create channel subscription endpoint. The vulnerable API endpoint is /api/v1/channel/subscriptions. The vulnerable parameter is channel id.

Recommendations: Update Mattermost Confluence Plugin to version 1.5.0 or later.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

BDU:2025-09760

CVE-2025-8285

GHSA-QJRX-J8WM-XF83

GO-2025-3868

OPENSUSE-SU-2025:15469-1

Affected Products

Mattermost Confluence Plugin

References · 32

• https://osv.dev/vulnerability/GHSA-qjrx-j8wm-xf83 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2025-3868 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-09760 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-8285 · Security Note
• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-8285 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15469-1 · Vendor Advisory
• https://github.com/mattermost/mattermost-plugin-confluence · Note
• https://suse.com/security/cve/CVE-2025-53514 · Note
• https://suse.com/security/cve/CVE-2025-44001 · Note
• https://suse.com/security/cve/CVE-2025-54478 · Note
• https://twitter.com/CVEnew/status/1954985229006880901 · Twitter Post
• https://suse.com/security/cve/CVE-2025-54525 · Note
• https://suse.com/security/cve/CVE-2025-44004 · Note
• https://suse.com/security/cve/CVE-2025-54463 · Note