CVE-2026-75587
Low
No strong exploitation signal.
CVSS base
3.6
LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
EPSS — probability of exploitation (30 days)
0.1%
0.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-200
Published 2026-08-17 · modified 2026-08-19
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | C | Changed |
| Confidentiality | L | Low |
| Integrity | N | None |
| Availability | N | None |
Timeline
- 2026-08-17 — Published (NVD)
- 2026-08-19 — Last modified (NVD)
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