CVE-2026-45670 PUBLISHED

Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)

Assigner: GitHub_M
Reserved: 12.05.2026 Published: 12.06.2026 Updated: 12.06.2026

Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder versions 3.15.4 to before 3.21.6, and 4.0.0-alpha.1 to before 4.4.6, there is an incomplete fix for GHSA-4gf7-ff8x-hq99. Source code may be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.6 and 4.4.6.

Metrics

CVSS Vector: CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 5.9

Product Status

Vendor nuxt
Product nuxt
Versions
  • Version >= 3.15.4, < 3.21.6 is affected
  • Version >= 4.0.0-alpha.1, < 4.4.6 is affected

References

Problem Types

  • CWE-749: Exposed Dangerous Method or Function CWE