Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default "..."). The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
vitejs vite affected
Version Status Constraints
>= 8.0.0, < 8.0.5 affected —
>= 7.0.0, < 7.3.2 affected —
>= 6.0.0, < 6.4.2 affected —
vitejs vite-plus affected
Version Status Constraints
< 0.1.16 affected —

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-p9ff-h696-f583 Vite Vulnerable to Arbitrary File Read via Vite Dev Server WebSocket
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583 cve-icon cve-icon
History

Tue, 07 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
Description Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default "..."). The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.
Title Vite Affected by Arbitrary File Read via Vite Dev Server WebSocket
Weaknesses CWE-200
CWE-306
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-07T19:10:44.916Z

Reserved: 2026-04-06T21:29:17.349Z

Link: CVE-2026-39363

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-07T20:16:30.000

Modified: 2026-04-07T20:16:30.000

Link: CVE-2026-39363

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses