CVE-2026-34218: medium-severity vulnerability in craigjbass clearancekit
ClearanceKit: Managed and user-defined policy rules not enforced between opfilter start and first policy modification
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.2%
ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to version 4.2.14, two related startup defects created a window during which only the single compile-time baseline rule was enforced by opfilter. All managed (MDM-delivered) and user-defined file-access rules were not applied until the user interacted with policies through the GUI, triggering a policy mutation over XPC. This issue has been patched in version 4.2.14.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Affected products
craigjbass · clearancekitRelated CVEs — craigjbass clearancekit
In the same product, most dangerous first.
CVE-2026-47134MEDIUMClearanceKit: Policy signing key in System Keychain has permissive ACL allowing any local-root process to forge signed policyEPSS 0.2%CVE-2026-47133MEDIUMClearanceKit's signed policy tables lack monotonic counter, allowing replay of older legitimately-signed snapshotsEPSS 0.2%CVE-2026-40599HIGHClearanceKit: Ad-hoc signed binaries can spoof Apple process identities in the global allowlistEPSS 0.1%CVE-2026-40191MEDIUMClearanceKit has a policy bypass via dual-path Endpoint Security events checking only source pathEPSS 0.1%CVE-2026-40604HIGHClearanceKit: opfilter system extension can be suspended or signalled by a root process, disabling file-access policy enforcementEPSS 0.1%CVE-2026-33632HIGHClearanceKit: opfilter policy bypass via exchangedata and clone operationsEPSS 0.1%