What’s Vulnerable › Vulnerabilities

CVE-2026-40191: ClearanceKit has a policy bypass via dual-path Endpoint Security events checking only source path

• Severity: medium (CVSS 6.8 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-10 · updated 2026-10-26
• Weakness: CWE-863

Description

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.

Affected products

• craigjbass clearancekit: before 5.0.4-beta-1f46165

References

• https://github.com/craigjbass/clearancekit/releases/tag/v5.0.4-1f46165
• https://github.com/craigjbass/clearancekit/security/advisories/GHSA-92f3-38m7-579h

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