CVE-2025-8285

Unauthorized Channel Subscription Creation in Mattermost Confluence Plugin

Description

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.

Remediation

Solution:

  • Update Mattermost Confluence Plugin to version 1.5.0 or higher.

Category

4.0
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: Mattermost Mattermost Confluence Plugin
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates

Frequently Asked Questions

What is the severity of CVE-2025-8285?
CVE-2025-8285 has been scored as a medium severity vulnerability.
How to fix CVE-2025-8285?
To fix CVE-2025-8285: Update Mattermost Confluence Plugin to version 1.5.0 or higher.
Is CVE-2025-8285 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-8285 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-8285?
CVE-2025-8285 affects Mattermost Mattermost Confluence Plugin.
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