CVE-2026-33632 HIGH

CVE-2026-33632: ClearanceKit: opfilter policy bypass via exchangedata and clone operations

Vendor Craigjbass
Product clearancekit
Weakness CWE-862 · Missing authorization
Published March 26, 2026
Last update March 27, 2026

CVSS base score

8.4/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:L/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 26, 2026 CVE published
March 27, 2026 Record updated