CVE-2025-53910
vulnerability analysis and mitigation

Overview

Mattermost Confluence Plugin version <1.5.0 contains a missing authorization vulnerability identified as CVE-2025-53910. The vulnerability was disclosed on August 11, 2025, affecting the channel access control mechanism in the Mattermost Confluence Plugin. The issue allows attackers to create channel subscriptions without proper access permissions through the edit channel subscription endpoint (NVD).

Technical details

The vulnerability is classified as a Missing Authorization issue (CWE-862) with a CVSS v3.1 base score of 4.0 (Medium). The attack vector is Network-based (AV:N) with High attack complexity (AC:H), requiring No privileges (PR:N) and No user interaction (UI:N). The scope is Changed (S:C), with No impact on confidentiality (C:N), Low impact on integrity (I:L), and No impact on availability (A:N) (NVD).

Impact

The vulnerability allows unauthorized users to bypass channel access controls and create channel subscriptions without proper permissions. This could lead to unauthorized access to channel content and potential information disclosure (NVD).

Mitigation and workarounds

Users should upgrade to Mattermost Confluence Plugin version 1.5.0 or later to address this vulnerability (Mattermost Security).

Additional resources


SourceThis report was generated using AI

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