CVE-2026-44466CWE-78

Zed: Allowlist Bypass via Bash Arithmetic Expansion in Terminal Tool Permissions

High · published May 28, 2026

CVSS v3.1
8.6
EPSS
0%
Percentile
12.4
In the wild
Unconfirmed
What it is

Zed is a code editor. Prior to 0.229.0, Zed's terminal tool permission system can be bypassed via bash arithmetic expansion $((...)), allowing execution of arbitrary commands nested inside an allowlisted command like echo. This vulnerability is fixed in 0.229.0.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00225 · 12.4th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-05-28T16:16Z
EPSS history
Timeline
  • 28 MAY 16:16Z
    Zed: Allowlist Bypass via Bash Arithmetic Expansion in Terminal Tool Permissions
    cvelistv5