What is CVE-2026-44463?

CVE-2026-44463 is a high-severity vulnerability in Zed, classified under OS Command Injection. CVSS score: 8.6/10. Published 2026-05-28.

How severe is CVE-2026-44463?

High severity. CVSS v3 base score is 8.6 out of 10.

RCE in Zed

CVE-2026-44463

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 class: Command Injection (OS Command Injection)

EPSS: 0.000 (7.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Zed
Zed-industries Zed — versions < 0.229.0

Weakness classification (CWE)

CWE-78 — OS Command Injection
CWE-184 — Incomplete List of Disallowed Inputs

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44463?: CVE-2026-44463 is a high-severity vulnerability in Zed, classified under OS Command Injection. CVSS score: 8.6/10. Published 2026-05-28.
How severe is CVE-2026-44463?: High severity. CVSS v3 base score is 8.6 out of 10.