CVE-2026-40599: high-severity vulnerability in craigjbass clearancekit
ClearanceKit: Ad-hoc signed binaries can spoof Apple process identities in the global allowlist
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 0.1%
ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to 5.0.5, ClearanceKit incorrectly treats a process with an empty Team ID and a non-empty Signing ID as an Apple platform binary. This bug allows a malicious software to impersonate an apple process in the global allowlist, and access all protected files. This vulnerability is fixed in 5.0.5.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
craigjbass · clearancekitRelated CVEs — craigjbass clearancekit
In the same product, most dangerous first.
CVE-2026-34218MEDIUMClearanceKit: Managed and user-defined policy rules not enforced between opfilter start and first policy modificationEPSS 0.2%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-2026-40191MEDIUMClearanceKit 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%