File Access Policy Bypass in ClearanceKit on macOS
CVE-2026-40604

8.2HIGH

Key Information:

Vendor

Craigjbass

Status
Clearancekit
Vendor
CVE Published:
21 April 2026

What is CVE-2026-40604?

ClearanceKit, an endpoint security system for macOS, previously had a vulnerability where its opfilter system extension could be suspended or terminated by any root process. This led to a significant security risk, as all AUTH Endpoint Security events would time out and revert to a default 'allow' state, effectively disabling the enforcement of file access policies during this period. This flaw has been addressed in version 5.0.6.

Affected Version(s)

clearancekit < 5.0.6

References

https://github.com/craigjbass/clearancekit/security/advis...
x_refsource_CONFIRM

CVSS V4

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.