How severe is CVE-2026-27800?

CVE-2026-27800 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-27800 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27800?

CVE-2026-27800 affects Zed. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27800?

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-2026-27800 have an EU (EUVD) identifier?

Yes. CVE-2026-27800 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8773.

When was CVE-2026-27800 published?

CVE-2026-27800 was published on 2026-02-26 and last updated on 2026-06-17.

CVE-2026-27800

CVE-2026-27800 is a high-severity vulnerability in Zed with a CVSS 3.x base score of 7.4. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8773
Weakness: CWE-22
Affected product: Zed
Published: 2026-02-26
Last modified: 2026-06-17

Description

Zed, a code editor, has a Zip Slip (Path Traversal) vulnerability exists in its extension archive extraction functionality prior to version 0.224.4. The `extract_zip()` function in `crates/util/src/archive.rs` fails to validate ZIP entry filenames for path traversal sequences (e.g., `../`). This allows a malicious extension to write files outside its designated sandbox directory by downloading and extracting a crafted ZIP archive. Version 0.224.4 fixes the issue.

Frequently asked questions

What is CVE-2026-27800?: Zed, a code editor, has a Zip Slip (Path Traversal) vulnerability exists in its extension archive extraction functionality prior to version 0.224.4. The `extract_zip()` function in `crates/util/src/archive.rs` fails to validate ZIP entry filenames for path traversal sequences (e.g., `../`). This allows a malicious extension to write files outside its designated sandbox directory by downloading and extracting a crafted ZIP archive. Version 0.224.4 fixes the issue.
How severe is CVE-2026-27800?: CVE-2026-27800 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-27800 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27800?: CVE-2026-27800 affects Zed. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27800?: 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-2026-27800 have an EU (EUVD) identifier?: Yes. CVE-2026-27800 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8773.
When was CVE-2026-27800 published?: CVE-2026-27800 was published on 2026-02-26 and last updated on 2026-06-17.

References

https://github.com/zed-industries/zed/security/advisories/GHSA-v385-xh3h-rrfr

Affected products (1)

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

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