CVE-2026-40604: Craigjbass Clearancekit

Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Craigjbass Clearancekit: before 5.0.6 (fixed in 5.0.6)

Published 2026-04-21. Last modified 2026-06-17.