PatchTheCVECVE-2026-75587: Mattermost Desktop App versions <=6.2 6.2.2.0 fail to redact the pre-auth secret when generating a diagnostics
CVE-2026-75587 is a low-severity flaw (CVSS 3.6) affecting mattermost desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 3.6 (Low) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.1% (top 97%) |
| CISA exploited list | No |
| Weakness | CWE-200 |
| Published | 2026-08-17 |
| Last modified | 2026-08-19 |
Last updated 2026-08-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-75587?
mattermost desktop: upgrade to 6.2.3. Exact commands for each OS are on this page.
Is CVE-2026-75587 being exploited?
CVE-2026-75587 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-75587 affect?
CVE-2026-75587 affects mattermost desktop. Severity is low (CVSS 3.6). 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 se
How urgent is CVE-2026-75587?
Priority 13/100. No elevated risk signals yet.
Software pages
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