What’s Vulnerable › Vulnerabilities

CVE-2026-34218: ClearanceKit: Managed and user-defined policy rules not enforced between opfilter start and first policy modification

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-31 · updated 2026-07-24
• Weakness: CWE-269

Description

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.

Affected products

• craigjbass clearancekit: before 4.2.14 — fixed in 4.2.14

How to fix

Upgrade to a fixed version: craigjbass clearancekit 4.2.14. Check the vendor advisory for mitigations.

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

Get alerted when CVE-2026-34218 or the next vulnerability affects your stack