{"id":"CVE-2026-40604","state":"PUBLISHED","title":"ClearanceKit: opfilter system extension can be suspended or signalled by a root process, disabling file-access policy enforcement","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.","publishedAt":"2026-04-21T17:41:53.580Z","updatedAt":"2026-04-21T20:36:53.181Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:H/SI:H/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["craigjbass clearancekit"],"affected":[{"vendor":"craigjbass","product":"clearancekit","versions":[{"version":"< 5.0.6","status":"affected"}]}],"references":["https://github.com/craigjbass/clearancekit/security/advisories/GHSA-5r9w-9fg6-266q"],"weaknesses":["CWE-693"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40604.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40604","state":"PUBLISHED","datePublished":"2026-04-21T17:41:53.580Z","dateUpdated":"2026-04-21T20:36:53.181Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-14T14:07:59.642Z"},"containers":{"cna":{"title":"ClearanceKit: opfilter system extension can be suspended or signalled by a root process, disabling file-access policy enforcement","descriptions":[{"lang":"en","value":"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":[{"vendor":"craigjbass","product":"clearancekit","versions":[{"version":"< 5.0.6","status":"affected"}]}],"references":[{"url":"https://github.com/craigjbass/clearancekit/security/advisories/GHSA-5r9w-9fg6-266q","name":"https://github.com/craigjbass/clearancekit/security/advisories/GHSA-5r9w-9fg6-266q","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:H/SI:H/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-693","lang":"en","description":"CWE-693: Protection Mechanism Failure","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-21T17:41:53.580Z"},"source":{"advisory":"GHSA-5r9w-9fg6-266q","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-21T19:55:00.518596Z","id":"CVE-2026-40604","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-21T20:36:53.181Z"}}]}}}