CVE-2025-13321 - CVE House
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Status published Low CVE-2025-13321

Mattermost Desktop App logging sensitive information and fails to clear data on server deletion

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Doyensec

References

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Affected Vendor

Affected Software

Mattermost
Vulnerable Versions:
0, 6.0.0

Timeline

Official Publish: December 17th, 2025
Last Modified: December 17th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-532

MITRE ATT&CK TTPs

T1005 Data from Local System
Collection
T1552 Unsecured Credentials
Credential Access
T1555 Credentials from Password Stores
Credential Access
T1078 Valid Accounts
Persistence
T1562 Impair Defenses
Defense Evasion