CVE WatchJul 15, 2026

CVE-2026-39363

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

CVSS

7.5

High

EPSS

2.9%

p85

KEV

—

Exploit Today

0-100

Published: Apr 7, 2026 · Last modified: Jul 15, 2026 · CWE-200 · CWE-306 · CWE-1220

EPSS · 30d

2.9%EPSS · 30 days2.9%

2026-06-302026-07-16

Technical 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.

Official references

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