Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)
CVE-2026-45670
5.9MEDIUM
What is CVE-2026-45670?
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.
Affected Version(s)
nuxt >= 3.15.4, < 3.21.6 < 3.15.4, 3.21.6
nuxt >= 4.0.0-alpha.1, < 4.4.6 < 4.0.0-alpha.1, 4.4.6