CVE-2026-75587CWE-200information-disclosure

CVE-2026-75587

Low · published August 18, 2026

CVSS v3.1
3.6
EPSS
0%
Percentile
2.6
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
3.6 · LOW
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00133 · 2.6th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-08-18T03:16Z
Affected products (1)
ProductVersionsFixed in
mattermost/mattermost_desktop< 6.2.36.2.3
References (1)
https://mattermost.com/security-updates · [email protected]
EPSS history
Timeline
  • 17 AUG 22:09Z
    Plaintext pre-auth secret exposure via Desktop App diagnostics report
    cvelistv5