CVE-2026-44466 PUBLISHED

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

Assigner: GitHub_M
Reserved: 06.05.2026 Published: 28.05.2026 Updated: 29.05.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS Score: 8.6

Attack Vector	Local	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	zed-industries
Product	zed
Versions	Version < 0.229.0 is affected

References

https://github.com/zed-industries/zed/security/advisories/GHSA-c99f-97vf-4h5h

Problem Types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE