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  5. CVE-2026-39363

CVE-2026-39363: Vite Vulnerable to Arbitrary File Read via Vite Dev Server WebSocket

April 6, 2026

server.fs check was not enforced to the fetchModule method that is exposed in Vite dev server’s WebSocket.

References

  • github.com/advisories/GHSA-p9ff-h696-f583
  • github.com/vitejs/vite
  • github.com/vitejs/vite/commit/f02d9fde0b195afe3ea2944414186962fbbe41e0
  • github.com/vitejs/vite/pull/22159
  • github.com/vitejs/vite/releases/tag/v6.4.2
  • github.com/vitejs/vite/releases/tag/v7.3.2
  • github.com/vitejs/vite/releases/tag/v8.0.5
  • github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583
  • nvd.nist.gov/vuln/detail/CVE-2026-39363

Code Behaviors & Features

Detect and mitigate CVE-2026-39363 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions starting from 6.0.0 before 6.4.2, all versions starting from 7.0.0 before 7.3.2, all versions starting from 8.0.0 before 8.0.5

Fixed versions

  • 8.0.5
  • 7.3.2
  • 6.4.2

Solution

Upgrade to versions 6.4.2, 7.3.2, 8.0.5 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-306: Missing Authentication for Critical Function

Source file

npm/vite/CVE-2026-39363.yml

Spotted a mistake? Edit the file on GitLab.

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