CVE-2025-54463

Unexpected Input to Cloud Webhook endpoint Causes DoS in Mattermost Confluence Plugin

Description

Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to server webhook endpoint with an invalid request body.

Remediation

Solution:

  • Update Mattermost Confluence Plugin to version 1.5.0 or higher.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
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-2025-54463?
CVE-2025-54463 has been scored as a medium severity vulnerability.
How to fix CVE-2025-54463?
To fix CVE-2025-54463: Update Mattermost Confluence Plugin to version 1.5.0 or higher.
Is CVE-2025-54463 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-54463 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-2025-54463?
CVE-2025-54463 affects Mattermost Mattermost Confluence Plugin.
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