TI-2026-26013 Aliases CVE-2026-33632

ClearanceKit: opfilter policy bypass via exchangedata and clone operations

LOW 37CWE-862Published 2026-03-26 · Updated 2026-03-27

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · Low
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to version 4.2.4, two file operation event types — ES_EVENT_TYPE_AUTH_EXCHANGEDATA and ES_EVENT_TYPE_AUTH_CLONE — were not intercepted by ClearanceKit's opfilter system extension, allowing local processes to bypass file access policies. Commit 6181c4a patches the vulnerability by subscribing to both event types and routing them through the existing policy evaluator. Users must upgrade to v4.2.4 or later and reactivate the system extension.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00105 1st percentileScored 2026-11-07

Fix Fixed clearancekit (craigjbass): 4.2.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
craigjbass	clearancekit	before 4.2.4	4.2.4	Patch available	CNA

clearancekit Vendorcraigjbass Affected before 4.2.4 Fixed in 4.2.4 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:craigjbass:clearancekit::::::::	before 4.2.4	Vulnerable	craigjbass

cpe:2.3:a:craigjbass:clearancekit:*:*:*:*:*:*:*:* Versions before 4.2.4 Vulnerable ·craigjbass

Remediation

Fix · CNA clearancekit (craigjbass) Fixed in 4.2.4

Timeline

2026-10-02 Threatist record created from CVE-2026-33632

References

Patch 2

TI-2026-29335 ClearanceKit: Ad-hoc signed binaries can spoof Apple process identities in the global allowlist CVSS 4.0HIGH 8.4
TI-2026-26012 ClearanceKit: opfilter policy bypass via non-open file operations CVSS 3.1HIGH 8.7
TI-2026-29340 Protection mechanism failure in craigjbass clearancekit CVSS 4.0HIGH 8.2
TI-2026-26513 ClearanceKit: Managed and user-defined policy rules not enforced between opfilter start and first policy modification CVSS 4.0MEDIUM 6.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences