High severity · published Mar 26, 2026
CVE-2026-33632
ClearanceKit: opfilter policy bypass via exchangedata and clone operations
7.8
CVSS
0.1%
EPSS
No
On KEV
Description
ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to version 4.2.4, two file operation event types — ES_EVENT_TYPE_AUTH_EXCHANGEDATA and ES_EVENT_TYPE_AUTH_CLONE — were not intercepted by ClearanceKit's opfilter system extension, allowing local processes to bypass file access policies. Commit 6181c4a patches the vulnerability by subscribing to both event types and routing them through the existing policy evaluator. Users must upgrade to v4.2.4 or later and reactivate the system extension.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
clearancekit · craigjbass
< 4.2.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33632
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33632
Patch
https://github.com/craigjbass/clearancekit/commit/6181c4a22eccbeca973c77f4bd023eb795c13786
Patch
https://github.com/craigjbass/clearancekit/security/advisories/GHSA-wpxj-vhfp-hhvm
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