Cyber Resilience

CVE-2026-44466

HighPublic PoCUpdated

Published: 28 May 2026

Published
28 May 2026
Modified
17 June 2026
KEV Added
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Patch
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CVSS Score v3.1 8.6 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Score 0.0023 14.0th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-44466 is a high-severity OS Command Injection (CWE-78) vulnerability in Zed Zed. Its CVSS base score is 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Unix Shell (T1059.004); ranked at the 14.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

CWE-78 OS command injection via bash arithmetic expansion directly enables arbitrary Unix shell command execution by bypassing allowlists.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-44461Same product: Zed Zed
CVE-2026-44465Same product: Zed Zed
CVE-2026-44463Same product: Zed Zed
CVE-2026-27976Same product: Zed Zed
CVE-2026-25805Same product: Zed Zed
CVE-2026-27800Same product: Zed Zed
CVE-2026-27967Same product: Zed Zed
CVE-2024-55590Shared CWE-78
CVE-2026-45629Shared CWE-78
CVE-2026-45630Shared CWE-78

Affected Assets

zed
zed
≤ 0.229.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References