CVE-2026-40191— ClearanceKit has a policy bypass via dual-path Endpoint Security events checking only source path
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I. Basic Information for CVE-2026-40191
Vulnerability Information
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Vulnerability Title
ClearanceKit has a policy bypass via dual-path Endpoint Security events checking only source path
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
ClearanceKit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ClearanceKit是Craig J. Bass个人开发者的一个macOS文件系统访问控制工具。 ClearanceKit 5.0.4-beta-1f46165之前版本存在安全漏洞，该漏洞源于端点安全事件处理程序仅检查双路径文件操作的源路径，而完全忽略目标路径，可能导致任何本地进程通过重命名、链接、复制文件等操作绕过文件访问保护。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| craigjbass | clearancekit | < 5.0.4-beta-1f46165 | - |
II. Public POCs for CVE-2026-40191
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Release v5.0.4-1f46165 · craigjbass/clearancekit · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-40191
IV. Related Vulnerabilities
Same product: clearancekit
- CVE-2026-40604
ClearanceKit: opfilter system extension can be suspended or - CVE-2026-40599
ClearanceKit: Ad-hoc signed binaries can spoof Apple process - CVE-2026-34218
ClearanceKit: Managed and user-defined policy rules not enfo - CVE-2026-33632
ClearanceKit: opfilter policy bypass via exchangedata and cl - CVE-2026-33631
ClearanceKit: opfilter policy bypass via non-open file opera
Same vendor: craigjbass
- CVE-2026-40604
ClearanceKit: opfilter system extension can be suspended or - CVE-2026-40599
ClearanceKit: Ad-hoc signed binaries can spoof Apple process - CVE-2026-34218
ClearanceKit: Managed and user-defined policy rules not enfo - CVE-2026-33632
ClearanceKit: opfilter policy bypass via exchangedata and cl - CVE-2026-33631
ClearanceKit: opfilter policy bypass via non-open file opera
Same weakness: CWE-863
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V. Comments for CVE-2026-40191
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