CVE-2025-54525

Unexpected input to Create Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin

Published Aug 11, 2025 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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 create channel subscription endpoint with an invalid request body.

Remediation

Vendor Solution

Update Mattermost Confluence Plugin to version 1.5.0 or higher.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2025-24170 Mattermost Confluence Plugin has Improper Validation of Specified Type of Input
Github GHSA Github GHSA GHSA-3cg3-3mmr-w8hj Mattermost Confluence Plugin has Improper Validation of Specified Type of Input
References
History
Type Values Removed Values Added
First Time appeared Mattermost confluence
CPEs cpe:2.3:a:mattermost:confluence:*:*:*:*:*:*:*:*
Vendors & Products Mattermost confluence
Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost
Vendors & Products Mattermost
Mattermost mattermost
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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 create channel subscription endpoint with an invalid request body.
Title Unexpected input to Create Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin
Weaknesses CWE-1287
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Aug 11, 2025, 7:40 PM
Reserved
Jul 28, 2025, 2:26 PM
Status
Analyzed
Published
Aug 11, 2025, 7:15 PM
Modified
Jun 17, 2026, 9:40 AM