Vulnerability · Published May 28, 2026 · Assigned by GitHub_M
CVE-2026-44466Zed: Allowlist Bypass via Bash Arithmetic Expansion in Terminal Tool Permissions
High 8.6
In plain English
A high-severity OS command injection in zed from zed-industries. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Severity (CVSS 3.1)8.6High
Exploit odds (30 days)0.3%top 79.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:25.10 | zed | no fix listed | UBUNTU-CVE-2026-44466 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| zed-industries | zed | < 0.229.0 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
- https://github.com/zed-industries/zed/security/advisories/GHSA-c99f-97vf-4h5h x_refsource_CONFIRM