Zed: Allowlist Bypass via Environment Variable Injection in Terminal Tool Permissions

published 2026-05-28 5 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-32939

cvss: 8.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits: 0; none known

Zed is a code editor. Prior to 0.229.0, Zed's terminal tool permission system can be bypassed by prepending environment variable assignments to allowlisted commands, hijacking program behavior (e.g., PAGER) to execute arbitrary code. This vulnerability is fixed in 0.229.0.

Patch / fix

fixed in 1

zed zed 0.229.0

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 5 mo ago (2026-05-29)

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/zed-industries/zed/security/advisories/GHSA-c3g6-c3ff-69cg referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.6	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

zed-industries zed

Classification

Weakness

CWE-184 Incomplete List of Disallowed Inputs
CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

github.com /zed-industries/zed/security/advisories/GHSA-c3g6-c3ff-69cg
exploit, vendor-advisory

Sources

CVE List CVE-2026-44463
NVD CVE-2026-44463

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary