CVE-2026-40191CWE-863

ClearanceKit has a policy bypass via dual-path Endpoint Security events checking only source path

Medium · published April 10, 2026

CVSS v4.0
6.8
EPSS
0%
Percentile
3.7
In the wild
Unconfirmed
What it is

ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to 5.0.4-beta-1f46165, ClearanceKit's Endpoint Security event handler only checked the source path of dual-path file operations against File Access Authorization (FAA) rules and App Jail policies. The destination path was ignored entirely. This allowed any local process to bypass file-access protection by using rename, link, copyfile, exchangedata, or clone operations to place or replace files inside protected directories. This vulnerability is fixed in 5.0.4-beta-1f46165.

The record
Technical detail
CVSS v4.0
6.8 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00148 · 3.7th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-04-10T20:19Z
EPSS history
Timeline
  • 10 APR 20:19Z
    ClearanceKit has a policy bypass via dual-path Endpoint Security events checking only source path
    cvelistv5