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CVE-2025-13321

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Date: December 17, 2025

Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-13321
https://github.com/mattermost/desktop/commit/722938bb6a97e8b8a5678e6858e44c4d505c08ee
https://github.com/mattermost/mattermost
https://mattermost.com/security-updates
https://www.mend.io/vulnerability-database/CVE-2025-13321

Severity Score

Weakness Type (CWE)

Insertion of Sensitive Information into Log File

CWE-532

Top Fix

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Upgrade Version

Upgrade to version github.com/mattermost/desktop - v6.0.0

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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