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Exposure of Sensitive Information to an Unauthorized Actor in org.webjars.npm:vite

CVE-2026-39363

  • org.webjars.npm:vite
  • vite
High
8.2/10

Summary

Vite is a frontend tooling framework for JavaScript. From 6.0.0 prior to 6.4.2, 7.0.0 prior to 7.3.2, and 8.0.0 prior to 8.0.5, if it is possible to connect to the Vite dev servers 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.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-200 - Information Exposure

An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.

References

Advisory Timeline

  • Published