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% (14th 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% (14th 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% (14th 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:*:*:*:*:*:*:*:*

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