CVE-2026-47134 Security feature bypass in clearancekit
Local root processes can forge signed policies in ClearanceKit due to missing keychain ACLs, bypassing file-system access controls.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47134?
CVE-2026-47134 is a medium-severity vulnerability in craigjbass clearancekit, published on 20 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. The ECDSA private key used to sign the on-disk policy database (`/Library/Application Support/clearancekit/store.db`) is stored in the macOS System Keychain. The key was created via the two-step pattern `SecKeyCreateRandomKey` (in-memory) followed by `SecItemAdd(kSecValueRef:, kSecAttrAccess:)` (persist). Prior to version 5.0.10, for `kSecClassKey` items in the legacy System Keychain, `kSecAttrAccess` passed to `SecItemAdd` is silently ignored — the persisted key inherits no ACL restriction. The same access builder applied to `kSecClassGenericPassword` items correctly binds the ACL, making this bug specific to the EC key. The result is that any process running as root can use the key to produce valid signatures over arbitrary policy content. Version 5.0.10 fixes the issue. No known workarounds are available. Disabling the system extension and manually removing the System Keychain item labelled `clearancekit policy signing key` would prevent the forged-signature path but also disables policy enforcement.
Weakness: CWE-732
Which versions are affected by CVE-2026-47134?
How do I fix CVE-2026-47134?
No fix has been published for CVE-2026-47134 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-47134 being exploited?
There is no known exploitation of CVE-2026-47134 in the wild and no public exploit code.
Sources
Also known as GHSA-w254-hxm5-3hgh.