{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33631", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-23T14:24:11.618Z", "datePublished": "2026-03-26T19:30:30.379Z", "dateUpdated": "2026-03-30T14:55:32.151Z"}, "containers": {"cna": {"title": "ClearanceKit: opfilter policy bypass via non-open file operations", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/craigjbass/clearancekit/security/advisories/GHSA-25f8-8cj2-m887", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/craigjbass/clearancekit/security/advisories/GHSA-25f8-8cj2-m887"}, {"name": "https://github.com/craigjbass/clearancekit/commit/a3d1733d2691a0d40209c48b01bf9291bf645207", "tags": ["x_refsource_MISC"], "url": "https://github.com/craigjbass/clearancekit/commit/a3d1733d2691a0d40209c48b01bf9291bf645207"}], "affected": [{"vendor": "craigjbass", "product": "clearancekit", "versions": [{"version": "< 4.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-26T19:32:15.556Z"}, "descriptions": [{"lang": "en", "value": "ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. In versions on the 4.1 branch and earlier, the opfilter Endpoint Security system extension enforced file access policy exclusively by intercepting ES_EVENT_TYPE_AUTH_OPEN events. Seven additional file operation event types were not intercepted, allowing any locally running process to bypass the configured FAA policy without triggering a denial. Commit a3d1733 adds subscriptions for all seven event types and routes them through the existing FAA policy evaluator. AUTH_RENAME and AUTH_UNLINK additionally preserve XProtect change detection: events on the XProtect path are allowed and trigger the existing onXProtectChanged callback rather than being evaluated against user policy. All versions on the 4.2 branch contain the fix. No known workarounds are available."}], "source": {"advisory": "GHSA-25f8-8cj2-m887", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-30T14:00:48.710772Z", "id": "CVE-2026-33631", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T14:55:32.151Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-33631", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-30T14:00:48.710772Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T14:00:54.650Z"}}], "cna": {"title": "ClearanceKit: opfilter policy bypass via non-open file operations", "source": {"advisory": "GHSA-25f8-8cj2-m887", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.7, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "craigjbass", "product": "clearancekit", "versions": [{"status": "affected", "version": "< 4.2"}]}], "references": [{"url": "https://github.com/craigjbass/clearancekit/security/advisories/GHSA-25f8-8cj2-m887", "name": "https://github.com/craigjbass/clearancekit/security/advisories/GHSA-25f8-8cj2-m887", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/craigjbass/clearancekit/commit/a3d1733d2691a0d40209c48b01bf9291bf645207", "name": "https://github.com/craigjbass/clearancekit/commit/a3d1733d2691a0d40209c48b01bf9291bf645207", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. In versions on the 4.1 branch and earlier, the opfilter Endpoint Security system extension enforced file access policy exclusively by intercepting ES_EVENT_TYPE_AUTH_OPEN events. Seven additional file operation event types were not intercepted, allowing any locally running process to bypass the configured FAA policy without triggering a denial. Commit a3d1733 adds subscriptions for all seven event types and routes them through the existing FAA policy evaluator. AUTH_RENAME and AUTH_UNLINK additionally preserve XProtect change detection: events on the XProtect path are allowed and trigger the existing onXProtectChanged callback rather than being evaluated against user policy. All versions on the 4.2 branch contain the fix. No known workarounds are available."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-862", "description": "CWE-862: Missing Authorization"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-26T19:32:15.556Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33631", "state": "PUBLISHED", "dateUpdated": "2026-03-30T14:55:32.151Z", "dateReserved": "2026-03-23T14:24:11.618Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-03-26T19:30:30.379Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. In versions on the 4.1 branch and earlier, the opfilter Endpoint Security system extension enforced file access policy exclusively by intercepting ES_EVENT_TYPE_AUTH_OPEN events. Seven additional file operation event types were not intercepted, allowing any locally running process to bypass the configured FAA policy without triggering a denial. Commit a3d1733 adds subscriptions for all seven event types and routes them through the existing FAA policy evaluator. AUTH_RENAME and AUTH_UNLINK additionally preserve XProtect change detection: events on the XProtect path are allowed and trigger the existing onXProtectChanged callback rather than being evaluated against user policy. All versions on the 4.2 branch contain the fix. No known workarounds are available."}, {"lang": "es", "value": "ClearanceKit intercepta eventos de acceso al sistema de archivos en macOS y aplica pol\u00edticas de acceso por proceso. En versiones de la rama 4.1 y anteriores, la extensi\u00f3n de sistema de seguridad de punto final opfilter aplicaba la pol\u00edtica de acceso a archivos exclusivamente interceptando eventos ES_EVENT_TYPE_AUTH_OPEN. Siete tipos de eventos de operaci\u00f3n de archivo adicionales no eran interceptados, permitiendo que cualquier proceso ejecut\u00e1ndose localmente eludiera la pol\u00edtica FAA configurada sin activar una denegaci\u00f3n. El commit a3d1733 a\u00f1ade suscripciones para los siete tipos de eventos y los enruta a trav\u00e9s del evaluador de pol\u00edticas FAA existente. AUTH_RENAME y AUTH_UNLINK adicionalmente preservan la detecci\u00f3n de cambios de XProtect: los eventos en la ruta de XProtect son permitidos y activan la devoluci\u00f3n de llamada onXProtectChanged existente en lugar de ser evaluados contra la pol\u00edtica de usuario. Todas las versiones de la rama 4.2 contienen la correcci\u00f3n. No se conocen soluciones alternativas disponibles."}], "id": "CVE-2026-33631", "lastModified": "2026-03-30T13:26:50.827", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-26T20:16:16.110", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/craigjbass/clearancekit/commit/a3d1733d2691a0d40209c48b01bf9291bf645207"}, {"source": "security-advisories@github.com", "url": "https://github.com/craigjbass/clearancekit/security/advisories/GHSA-25f8-8cj2-m887"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,4.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "clearancekit", "source": "cna", "vendor": "craigjbass"}, "product": "clearancekit", "vendor": "craigjbass"}], "analysis": {"en": {"generated_at": "2026-03-26T20:20:37.545512+00:00", "value": {"mitigation_remediation": ["Upgrade ClearanceKit to version 4.2 or later, which includes the required event subscriptions for all file operation types.", "Verify that the updated extension is active and that FAA policies are enforced as expected.", "If an upgrade is not possible immediately, restrict local user file access permissions and monitor for unauthorized file activity.", "Consider disabling ClearanceKit temporarily until a patched version can be deployed."], "summary": {"action": "Patch Now", "impact": "Unauthorized File Access"}, "threat_synthesis": {"affected_systems": "The affected vendor is ClearanceKit, with products on the 4.1 branch and earlier being vulnerable. All releases on the 4.2 branch include the fix and are no longer affected.", "description_and_impact": "ClearanceKit, a macOS file\u2011system access interceptor, enforced per\u2011process access policies by monitoring only ES_EVENT_TYPE_AUTH_OPEN events. In versions 4.1 and earlier, other file operation events were ignored, allowing any locally running process to read or modify files regardless of the configured policies. This violates the intended confidentiality and integrity controls for protected files and can be exploited by a local user to bypass the Access Policy Enforcement (FAA) mechanism.", "risk_and_exploitability": "The vulnerability carries a CVSS base score of 8.7, indicating high severity. No EPSS score is provided, and the issue is not listed in CISA\u2019s KEV catalog, but the attack vector requires local process execution, which is likely for any user on the system. An attacker who can run code locally can exploit the bypass to read or modify files protected by ClearanceKit\u2019s FAA policies, potentially escalating privileges and compromising system integrity."}}}}, "created": "2026-03-27T08:33:07.918204+00:00", "updated": "2026-03-27T09:25:28.015554+00:00", "vendors": ["craigjbass", "craigjbass$PRODUCT$clearancekit"]}