Vulnerability Details CVE-2026-40604
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.3%
CVSS Severity
CVSS v3 Score 4.4
Products affected by CVE-2026-40604
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cpe:2.3:a:craigjbass:clearancekit:3.1
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cpe:2.3:a:craigjbass:clearancekit:3.2
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cpe:2.3:a:craigjbass:clearancekit:3.3
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cpe:2.3:a:craigjbass:clearancekit:4.0
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cpe:2.3:a:craigjbass:clearancekit:4.1
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cpe:2.3:a:craigjbass:clearancekit:4.2
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cpe:2.3:a:craigjbass:clearancekit:4.2.1
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cpe:2.3:a:craigjbass:clearancekit:4.2.10
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cpe:2.3:a:craigjbass:clearancekit:4.2.11
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cpe:2.3:a:craigjbass:clearancekit:4.2.12
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cpe:2.3:a:craigjbass:clearancekit:4.2.13
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cpe:2.3:a:craigjbass:clearancekit:4.2.14
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cpe:2.3:a:craigjbass:clearancekit:4.2.15
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cpe:2.3:a:craigjbass:clearancekit:4.2.16
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cpe:2.3:a:craigjbass:clearancekit:4.2.17
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cpe:2.3:a:craigjbass:clearancekit:4.2.18
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cpe:2.3:a:craigjbass:clearancekit:4.2.2
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cpe:2.3:a:craigjbass:clearancekit:4.2.3
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cpe:2.3:a:craigjbass:clearancekit:4.2.4
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cpe:2.3:a:craigjbass:clearancekit:4.2.5
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cpe:2.3:a:craigjbass:clearancekit:4.2.6
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cpe:2.3:a:craigjbass:clearancekit:4.2.7
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cpe:2.3:a:craigjbass:clearancekit:4.2.8
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cpe:2.3:a:craigjbass:clearancekit:4.2.9
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cpe:2.3:a:craigjbass:clearancekit:5.0.1
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cpe:2.3:a:craigjbass:clearancekit:5.0.2
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cpe:2.3:a:craigjbass:clearancekit:5.0.3
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cpe:2.3:a:craigjbass:clearancekit:5.0.4
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cpe:2.3:a:craigjbass:clearancekit:5.0.5
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cpe:2.3:o:apple:macos:-