CVE-2025-54478highCWE-306

CVE-2025-54478: high-severity vulnerability in Mattermost Confluence Plugin

Unauthenticated Channel Subscription Edit in Mattermost Confluence Plugin

Published

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.2epss 0.3%
Mattermost Confluence Plugin version <1.5.0 fails to enforce authentication of the user to the Mattermost instance which allows unauthenticated attackers to edit channel subscriptions via API call to the edit channel subscription endpoint.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
Mattermost · Mattermost Confluence Plugin
Related CVEs — Mattermost Confluence Plugin

In the same product, most dangerous first.

CVE-2025-54525HIGHUnexpected input to Create Channel Subscription endpoint causes DoS in Mattermost Confluence PluginEPSS 0.4%CVE-2025-52931HIGHUnexpected input to Update Channel Subscription endpoint causes DoS in Mattermost Confluence PluginEPSS 0.4%CVE-2025-54463MEDIUMUnexpected Input to Cloud Webhook endpoint Causes DoS in Mattermost Confluence PluginEPSS 0.3%CVE-2025-53514MEDIUMUnexpected Input to Server Webhook endpoint Causes DoS in Mattermost Confluence PluginEPSS 0.3%CVE-2025-49221LOWUnauthenticated Access to Channel Subscription in Mattermost Confluence PluginEPSS 0.3%CVE-2025-54458MEDIUMUnauthorized Subscription Creation to Confluence Space in Mattermost Confluence PluginEPSS 0.2%