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OpenAdvisories
Medium · 5.9 CVE-2026-45670 EUVD-2026-36419GHSA-6m52-m754-pw2g

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

Published Jun 12, 2026 · Updated Jun 12, 2026 · Assigned by GitHub_M

Description

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 products

VendorProductAffectedFixed
nuxt nuxt >= 3.15.4, < 3.21.6, >= 4.0.0-alpha.1, < 4.4.6 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @nuxt/rspack-builder >= 3.15.4, < 3.21.6 3.21.6 GHSA-6m52-m754-pw2g
npm @nuxt/rspack-builder >= 4.0.0-alpha.1, < 4.4.6 4.4.6 GHSA-6m52-m754-pw2g
npm @nuxt/webpack-builder >= 3.15.4, < 3.21.6 3.21.6 GHSA-6m52-m754-pw2g
npm @nuxt/webpack-builder >= 4.0.0-alpha.1, < 4.4.6 4.4.6 GHSA-6m52-m754-pw2g

References