CVE-2026-40604

Medium

Description

ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to 5.0.6, the opfilter Endpoint Security system extension (bundle ID uk.craigbass.clearancekit.opfilter) can be suspended with SIGSTOP or kill -STOP, or killed with SIGKILL/SIGTERM, by any process running as root. While the extension is suspended, all AUTH Endpoint Security events time out and default to allow, silently disabling ClearanceKit's file-access policy enforcement for the duration of the suspension. This vulnerability is fixed in 5.0.6.

SeverityMedium
CVSS4.4
Exploit probability—
ProductCraigjbass Clearancekit
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-693CWE-693

How to fix

Update
  • craigjbass clearancekit5.0.6 or later

Affected products

ProductAffected versionsFixed in
craigjbass clearancekitv < 5.0.65.0.6

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