How severe is CVE-2026-44466?

CVE-2026-44466 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-44466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44466?

CVE-2026-44466 affects Zed. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44466?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-44466 have an EU (EUVD) identifier?

Yes. CVE-2026-44466 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32940.

When was CVE-2026-44466 published?

CVE-2026-44466 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-44466

CVE-2026-44466 is a high-severity vulnerability in Zed with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32940
Weakness: CWE-78
Affected product: Zed
Published: 2026-05-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-44466?: 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.
How severe is CVE-2026-44466?: CVE-2026-44466 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-44466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44466?: CVE-2026-44466 affects Zed. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-44466 have an EU (EUVD) identifier?: Yes. CVE-2026-44466 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32940.
When was CVE-2026-44466 published?: CVE-2026-44466 was published on 2026-05-28 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:zed:zed:*:*:*:*:*:*:*:*

More vulnerabilities in Zed

CVE-2026-27976 — High (CVSS 8.8): Zed, a code editor, has an extension installer allows tar/gzip downloads. Prior to version 0.224.4, the tar extractor…
CVE-2026-44465 — High (CVSS 8.6): Zed is a code editor. Prior to 0.227.1, Zed IDE executes arbitrary commands when opening a folder with a malicious…
CVE-2026-44463 — High (CVSS 8.6): Zed is a code editor. Prior to 0.229.0, Zed's terminal tool permission system can be bypassed by prepending environment…
CVE-2026-44461 — High (CVSS 8.6): Zed is a code editor. Prior to 0.227.1, Zed builds SSH/WSL remote commands as a shell command string that starts with…
CVE-2025-68433 — High (CVSS 7.7): Zed, a code editor, has an aribtrary code execution vulnerability in versions prior to 0.218.2-pre. The Zed IDE loads…
CVE-2025-68432 — High (CVSS 7.7): Zed, a code editor, has an aribtrary code execution vulnerability in versions prior to 0.218.2-pre. The Zed IDE loads…

All CVEs affecting Zed →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-100382 — Critical (CVSS 10.0): Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia…
CVE-2026-77521 — Critical (CVSS 10.0): MaxKB is an open-source AI assistant for enterprise. Prior to version 2.10.5-lts, assistants with a tool, MCP tool,…
CVE-2026-82004 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2026-76197 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2026-76195 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2026-19188 — Critical (CVSS 10.0): A critical OS command injection vulnerability has been identified in the Haiwell IoT Cloud HMI Gateway product. The…

Browse all CWE-78 (OS Command Injection) vulnerabilities →