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LOW · 3.6

CVE-2026-75587

Mattermost Desktop App versions <=6.2 6.2.2.0 fail to redact the pre-auth secret when generating a diagnostics report, which allows a local attacker with access to a user's diagnostics report or log f...

Vulnerability Description

Mattermost Desktop App versions <=6.2 6.2.2.0 fail to redact the pre-auth secret when generating a diagnostics report, which allows a local attacker with access to a user's diagnostics report or log files to obtain the plaintext pre-auth secret configured for a connected server via inspecting the Server Connectivity (Step-3) diagnostics output. Mattermost Advisory ID: MMSA-2026-00716

CVSS Score

3.6

LOW

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
MattermostMattermost Desktop< 6.2.3

Related Weaknesses (CWE)

CWE-200

References

FAQ

What is CVE-2026-75587?

CVE-2026-75587 is a vulnerability with a CVSS score of 3.6 (LOW). Mattermost Desktop App versions <=6.2 6.2.2.0 fail to redact the pre-auth secret when generating a diagnostics report, which allows a local attacker with access to a user's diagnostics report or log f...

How severe is CVE-2026-75587?

CVE-2026-75587 has been rated LOW with a CVSS base score of 3.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-75587?

Check the references section above for vendor advisories and patch information. Affected products include: Mattermost Mattermost Desktop.