Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2025-54478
CVE-2025-54478:
vulnerability analysis and mitigation
Overview
The Mattermost Confluence Plugin version <1.5.0 contains a critical authentication bypass vulnerability identified as CVE-2025-54478. The vulnerability was discovered and disclosed on August 11, 2025, affecting the authentication mechanism of the Mattermost instance. The vulnerability allows unauthenticated attackers to edit channel subscriptions through API calls to the edit channel subscription endpoint (NVD).
Technical details
The vulnerability is classified as CWE-306 (Missing Authentication for Critical Function) with a CVSS v3.1 Base Score of 7.2 (HIGH). The attack vector is network-based (AV:N) with low attack complexity (AC:L), requiring no privileges (PR:N) or user interaction (UI:N). The scope is changed (S:C) with low impact on confidentiality (C:L) and integrity (I:L), but no impact on availability (A:N) (NVD).
Impact
The vulnerability allows unauthenticated attackers to bypass authentication controls and modify channel subscriptions through the API. This could lead to unauthorized access to channel configurations and potential information disclosure or service disruption (NVD).
Mitigation and workarounds
Users are advised to upgrade their Mattermost Confluence Plugin to version 1.5.0 or later, which contains the fix for this vulnerability. No alternative workarounds have been publicly documented (NVD).
Additional resources
Source: This report was generated using AI
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