CVE-2026-40191

MEDIUMNVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: None knownExposed: 0

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

ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to 5.0.4-beta-1f46165, ClearanceKit's Endpoint Security event handler only checked the source path of dual-path file operations against File Access Authorization (FAA) rules and App Jail policies. The destination path was ignored entirely. This allowed any local process to bypass file-access protection by using rename, link, copyfile, exchangedata, or clone operations to place or replace files inside protected directories. This vulnerability is fixed in 5.0.4-beta-1f46165.

CVSS v3
6.8
EG Score
6.8(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: Track

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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

April 10, 2026

Last Modified

April 16, 2026

Advisory Details (2)

Auto-updated Aug 2, 2026
Patch available. Sources: github_release, github.
github Patch Available

Policy bypass via dual-path Endpoint Security events checking only source path · Advisory · craigjbass/clearancekit · GitHub

https://github.com/craigjbass/clearancekit/security/advisories/GHSA-92f3-38m7-579h
github_release Patch Available

v5.0.4-1f46165

Patch available: craigjbass/clearancekit v5.0.4-1f46165

https://github.com/craigjbass/clearancekit/releases/tag/v5.0.4-1f46165

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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.

Showing the most recent 100 of 143 total refreshes for this CVE.

  1. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 09:37 UTCEPSS rescore
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  7. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 06:14 UTCOSV refresh
  11. 2026-09-01 13:53 UTCEPSS rescore
  12. 2026-09-01 04:39 UTCEPSS rescore
  13. 2026-08-30 19:17 UTCEPSS rescore
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  15. 2026-08-28 21:41 UTCEPSS rescore
  16. 2026-08-27 14:25 UTCEPSS rescore
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  21. 2026-08-20 22:55 UTCEPSS rescore
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  24. 2026-08-17 13:47 UTCEPSS rescore
  25. 2026-08-16 14:56 UTCEPSS rescore
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  1. 2026-08-16 07:00 UTCEG score recompute
  2. 2026-08-16 02:14 UTCEPSS rescore
  3. 2026-08-15 01:30 UTCEPSS rescore
  4. 2026-08-14 05:00 UTCEG score recompute
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-12 19:13 UTCEG score recompute
  7. 2026-08-12 13:51 UTCEPSS rescore
  8. 2026-08-11 13:43 UTCEPSS rescore
  9. 2026-08-11 03:36 UTCEG score recompute
  10. 2026-08-11 00:00 UTCEPSS rescore
  11. 2026-08-10 04:01 UTCEG score recompute
  12. 2026-08-09 13:46 UTCEPSS rescore
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  14. 2026-08-08 16:37 UTCEPSS rescore
  15. 2026-08-07 14:11 UTCEG score recompute
  16. 2026-08-06 13:46 UTCEPSS rescore
  17. 2026-08-05 23:38 UTCEG score recompute
  18. 2026-08-05 19:17 UTCEPSS rescore
  19. 2026-08-04 15:10 UTCEPSS rescore
  20. 2026-08-03 21:53 UTCEG score recompute
  21. 2026-08-03 10:36 UTCEPSS rescore
  22. 2026-08-02 13:40 UTCEG score recompute
  23. 2026-08-02 02:27 UTCEPSS rescore
  24. 2026-08-01 04:16 UTCEPSS rescore
  25. 2026-07-30 16:28 UTCEPSS rescore
  26. 2026-07-30 01:30 UTCEPSS rescore
  27. 2026-07-27 14:13 UTCEPSS rescore
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  30. 2026-07-24 14:17 UTCEPSS rescore
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  32. 2026-07-23 03:11 UTCEG score recompute
  33. 2026-07-22 14:08 UTCEPSS rescore
  34. 2026-07-21 15:24 UTCEPSS rescore
  35. 2026-07-20 17:08 UTCEPSS rescore
  36. 2026-07-20 14:02 UTCOSV refresh
  37. 2026-07-19 14:31 UTCEPSS rescore
  38. 2026-07-18 10:04 UTCEPSS rescore
  39. 2026-07-16 17:03 UTCEPSS rescore
  40. 2026-07-15 16:57 UTCEPSS rescore
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  42. 2026-07-15 02:00 UTCEPSS rescore
  43. 2026-07-13 22:30 UTCEPSS rescore
  44. 2026-07-13 06:13 UTCEPSS rescore
  45. 2026-07-13 06:13 UTCEPSS rescore
  46. 2026-07-11 08:27 UTCEPSS rescore
  47. 2026-07-09 19:10 UTCEPSS rescore
  48. 2026-07-08 15:15 UTCEPSS rescore
  49. 2026-07-07 13:46 UTCEPSS rescore
  50. 2026-07-06 16:27 UTCEPSS rescore
  51. 2026-07-06 16:27 UTCEPSS rescore
  52. 2026-07-06 02:23 UTCEPSS rescore
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  54. 2026-07-04 06:31 UTCEPSS rescore
  55. 2026-07-01 15:06 UTCEPSS rescore
  56. 2026-06-30 23:22 UTCEPSS rescore
  57. 2026-06-28 14:07 UTCEPSS rescore
  58. 2026-06-28 04:56 UTCEPSS rescore
  59. 2026-06-27 03:08 UTCEPSS rescore
  60. 2026-06-25 13:49 UTCEPSS rescore
  61. 2026-06-25 13:49 UTCEPSS rescore
  62. 2026-06-23 21:33 UTCEPSS rescore
  63. 2026-06-22 14:25 UTCEPSS rescore
  64. 2026-06-22 14:25 UTCEPSS rescore
  65. 2026-06-21 14:56 UTCEPSS rescore
  66. 2026-06-21 14:56 UTCEPSS rescore
  67. 2026-06-21 01:59 UTCEPSS rescore
  68. 2026-06-19 19:25 UTCEPSS rescore
  69. 2026-06-18 17:52 UTCEPSS rescore
  70. 2026-06-18 17:52 UTCEPSS rescore
  71. 2026-06-17 17:53 UTCEPSS rescore
  72. 2026-06-16 17:52 UTCEPSS rescore
  73. 2026-06-15 17:49 UTCEPSS rescore
  74. 2026-06-13 23:00 UTCEPSS rescore
  75. 2026-06-12 23:12 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-40191?
CVE-2026-40191 is a medium vulnerability published on April 10, 2026. ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to 5.0.4-beta-1f46165, ClearanceKit's Endpoint Security event handler only checked the source path of dual-path file operations against File Access Authorization (FAA) rules and App Jail…
When was CVE-2026-40191 disclosed?
CVE-2026-40191 was first published in the National Vulnerability Database on April 10, 2026, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40191 actively exploited?
CVE-2026-40191 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.2% of all scored CVEs.
What is the CVSS score of CVE-2026-40191?
CVE-2026-40191 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-40191?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40191, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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