CVE-2026-44466

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

State: Published
Severity: 8.6 High
Published: May 28, 2026
Updated: May 29, 2026
Reserved: May 6, 2026

Description

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.

Scores

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

Weaknesses

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

Affected Products

Product	Versions
zedzed-industries	< 0.229.0Affected

References

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

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