How severe is CVE-2026-44463?

CVE-2026-44463 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-2026-44463 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-2026-44463?

CVE-2026-44463 affects Zed. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44463?

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-2026-44463 have an EU (EUVD) identifier?

Yes. CVE-2026-44463 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32939.

When was CVE-2026-44463 published?

CVE-2026-44463 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-44463

CVE-2026-44463 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-2026-32939
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 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.

Frequently asked questions

What is 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 is fixed in 0.229.0.
How severe is CVE-2026-44463?: CVE-2026-44463 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-2026-44463 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-2026-44463?: CVE-2026-44463 affects Zed. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44463?: 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-2026-44463 have an EU (EUVD) identifier?: Yes. CVE-2026-44463 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32939.
When was CVE-2026-44463 published?: CVE-2026-44463 was published on 2026-05-28 and last updated on 2026-06-17.

References

https://github.com/zed-industries/zed/security/advisories/GHSA-c3g6-c3ff-69cg

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-2026-44466 — High (CVSS 8.6): Zed is a code editor. Prior to 0.229.0, Zed's terminal tool permission system can be bypassed via bash arithmetic…
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-2026-44461 — 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-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

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