Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2025-47871
CVE-2025-47871:
vulnerability analysis and mitigation
Overview
A vulnerability identified as CVE-2025-47871 affects Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, and 10.6.x <= 10.6.5. The issue was discovered and reported to Mattermost, Inc. (NVD).
Technical details
The vulnerability stems from improper validation of channel membership when retrieving playbook run metadata. This is classified as an Incorrect Authorization issue (CWE-863). The vulnerability has been assigned a CVSS v3.1 base score of 4.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N (NVD).
Impact
The vulnerability allows authenticated users who are playbook members but not channel members to access sensitive information about linked private channels. The exposed information includes channel name, display name, and participant count through the run metadata API endpoint (NVD).
Mitigation and workarounds
Users are advised to upgrade to the latest version of Mattermost that contains the security fix (Mattermost Security).
Additional resources
Source: This report was generated using AI
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