CVE-2025-53514

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

State: Published
Severity: 5.9 Medium
Published: Aug 11, 2025
Updated: Aug 11, 2025
Reserved: Jul 28, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.9 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	Mattermost

Weaknesses

CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

Product	Versions
Mattermost Confluence PluginMattermost	before 1.5.0Affected 1.5.0Not affected

References

https://mattermost.com/security-updates

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