CVE-2026-34218

ClearanceKit: Managed and user-defined policy rules not enforced between opfilter start and first policy modification

CVSS 6.3 MEDIUMEPSS 0.2%CWE-269

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 · clearancekit

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References

https://github.com/craigjbass/clearancekit/commit/56d617b778c571e3c29b803636d9807940992daa https://github.com/craigjbass/clearancekit/commit/ddfdacb2633681bbd9c2f41dbd536ea039386628 https://github.com/craigjbass/clearancekit/security/advisories/GHSA-fpmv-5wgw-qhhr