CVE-2026-75587

LOWNVD 3.33.6▲
EchelonGraph scoreMEDIUM confidence

Score 3.6 from GitHub Security Advisory (severity: LOW) published 2026-08-18. NVD baseline CVSS 3.3; sources differ by 0.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
3.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 3.3Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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 v3
3.3
EG Score
3.6LOWmedium confidence
EG Risk
16
EG Risk 16/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity36% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

August 19, 2026

References (1)

Vendor Advisories for CVE-2026-75587(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-03 17:45 UTCEG score recompute
  2. 2026-10-03 17:45 UTCGHSA enrichment
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-01 19:50 UTCEPSS rescore
  5. 2026-09-30 12:14 UTCEG score recompute
  6. 2026-09-30 12:14 UTCGHSA enrichment
  7. 2026-09-29 15:24 UTCEPSS rescore
  8. 2026-09-28 13:52 UTCEPSS rescore
  9. 2026-09-27 13:48 UTCEPSS rescore
  10. 2026-09-27 08:03 UTCEG score recompute
  11. 2026-09-27 08:03 UTCGHSA enrichment
  12. 2026-09-26 15:59 UTCEPSS rescore
  13. 2026-09-26 00:28 UTCEPSS rescore
  14. 2026-09-24 14:04 UTCEPSS rescore
  15. 2026-09-23 17:54 UTCEPSS rescore
  16. 2026-09-23 14:13 UTCEG score recompute
  17. 2026-09-23 14:13 UTCGHSA enrichment
  18. 2026-09-22 16:01 UTCEPSS rescore
  19. 2026-09-21 21:09 UTCEPSS rescore
  20. 2026-09-20 10:10 UTCEG score recompute
  21. 2026-09-20 10:10 UTCGHSA enrichment
  22. 2026-09-17 06:07 UTCEG score recompute
  23. 2026-09-17 06:07 UTCGHSA enrichment
  24. 2026-09-16 14:08 UTCEPSS rescore
  25. 2026-09-16 05:15 UTCEPSS rescore
Show 43 more
  1. 2026-09-15 03:12 UTCEPSS rescore
  2. 2026-09-14 01:57 UTCEG score recompute
  3. 2026-09-14 01:57 UTCGHSA enrichment
  4. 2026-09-12 15:02 UTCEPSS rescore
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-10 21:54 UTCEG score recompute
  7. 2026-09-10 21:54 UTCGHSA enrichment
  8. 2026-09-10 09:35 UTCEPSS rescore
  9. 2026-09-08 22:01 UTCEPSS rescore
  10. 2026-09-07 17:49 UTCEG score recompute
  11. 2026-09-07 17:49 UTCGHSA enrichment
  12. 2026-09-06 13:48 UTCEPSS rescore
  13. 2026-09-04 13:46 UTCEG score recompute
  14. 2026-09-04 13:46 UTCGHSA enrichment
  15. 2026-09-04 05:07 UTCEPSS rescore
  16. 2026-09-01 13:54 UTCEPSS rescore
  17. 2026-09-01 09:40 UTCGHSA enrichment
  18. 2026-08-29 05:06 UTCEG score recompute
  19. 2026-08-29 05:05 UTCGHSA enrichment
  20. 2026-08-28 21:42 UTCEPSS rescore
  21. 2026-08-27 14:25 UTCEPSS rescore
  22. 2026-08-26 14:47 UTCEPSS rescore
  23. 2026-08-26 00:14 UTCEG score recompute
  24. 2026-08-26 00:14 UTCGHSA enrichment
  25. 2026-08-24 14:18 UTCEPSS rescore
  26. 2026-08-23 00:19 UTCEPSS rescore
  27. 2026-08-22 20:08 UTCEG score recompute
  28. 2026-08-22 20:08 UTCGHSA enrichment
  29. 2026-08-21 23:49 UTCEPSS rescore
  30. 2026-08-20 22:56 UTCEPSS rescore
  31. 2026-08-19 17:04 UTCEPSS rescore
  32. 2026-08-19 16:05 UTCEG score recompute
  33. 2026-08-19 16:04 UTCGHSA enrichment
  34. 2026-08-19 16:04 UTCNVD updateCVSS v3 → 3.3
  35. 2026-08-18 15:23 UTCEG score recompute
  36. 2026-08-18 15:23 UTCGHSA enrichment
  37. 2026-08-18 14:49 UTCEG score recompute
  38. 2026-08-18 14:49 UTCGHSA enrichment
  39. 2026-08-18 13:49 UTCEPSS rescore
  40. 2026-08-18 13:49 UTCEPSS rescore
  41. 2026-08-17 23:22 UTCEG score recompute
  42. 2026-08-17 22:19 UTCEG score recompute
  43. 2026-08-17 22:18 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-75587?
CVE-2026-75587 is a low vulnerability published on August 17, 2026. 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…
When was CVE-2026-75587 disclosed?
CVE-2026-75587 was first published on August 17, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75587 actively exploited?
CVE-2026-75587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75587?
CVE-2026-75587 has a CVSS v3 base score of 3.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 3.6 (LOW).
How do I remediate CVE-2026-75587?
No fix for CVE-2026-75587 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-75587 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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