Medium severity · published Apr 10, 2026
CVE-2026-40191
ClearanceKit has a policy bypass via dual-path Endpoint Security events checking only source path
6.8
CVSS
0.1%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
clearancekit · craigjbass
< 5.0.4-beta-1f46165 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40191
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-40191
github.com
https://github.com/craigjbass/clearancekit/releases/tag/v5.0.4-1f46165
github.com
https://github.com/craigjbass/clearancekit/security/advisories/GHSA-92f3-38m7-579h
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