Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2025-49810
CVE-2025-49810:
vulnerability analysis and mitigation
Overview
Mattermost versions 10.5.x <= 10.5.8 contain an access control validation vulnerability that allows users to read threads via AI posts. The vulnerability was disclosed on August 21, 2025 and affects Mattermost server versions from 10.5.0 up to but not including 10.5.9 (NVD).
Technical details
The vulnerability is tracked as CVE-2025-49810 and has been assigned a CVSS v3.1 base score of 3.5 (Low) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N. The vulnerability stems from a failure to validate access controls at the time of access, specifically in the context of AI posts functionality (NVD, AttackerKB).
Impact
The vulnerability allows authenticated users with low privileges to read thread content they should not have access to through AI posts. The impact is limited to confidentiality breaches with no effect on system integrity or availability (NVD).
Mitigation and workarounds
Users should upgrade to Mattermost version 10.5.9 or later which contains fixes for this vulnerability (NVD).
Additional resources
Source: This report was generated using AI
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