CVE-2026-75587 (GCVE-0-2026-75587)

Vulnerability from cvelistv5 – Published: 2026-08-17 22:09 – Updated: 2026-08-18 14:20
VLAI
Title
Plaintext pre-auth secret exposure via Desktop App diagnostics report
Summary
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
Severity
3.6 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 14:19 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
Mattermost CNA under the mitre root
CNA scorecard B 80/100 over 122 records in the last 180 days details
References
URL Tags
https://mattermost.com/security-updates vendor-advisory
Impacted products
Vendor Product Version CPE status
Mattermost Mattermost Affected: 0 , ≤ 6.2.2 (semver)
Unaffected: 6.3.0
Unaffected: 6.2.3.0
guessed Create a notification for this product.
Credits
Juho Forsén
Show details on NVD website
To clipboard 

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