EUVD-2026-36421

@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent incomplete fix for GHSA-6m52-m754-pw2g...

GHSA-X6QJ-4H56-5RJ5 @nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)

Summary This is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still 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. Details The fix for...

CVE-2026-49993 @nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)

Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack /...

CVE-2026-49993 @nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)

Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack /...

CVE-2026-45670 Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)

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 /...

PT-2026-41963

Name of the Vulnerable Software and Affected Versions @nuxt/rspack-builder versions 3.15.4 through 3.21.5 @nuxt/rspack-builder versions 4.0.0-alpha.1 through 4.4.5 @nuxt/webpack-builder versions 3.15.4 through 3.21.5 @nuxt/webpack-builder versions 4.0.0-alpha.1 through 4.4.5 Description An...

Opening a malicious website while running a Nuxt dev server could allow read-only access to code

Summary Source code may be stolen during dev when using webpack / rspack builder and you open a malicious web site. Details Because the request for classic script by a script tag is not subject to same origin policy, an attacker can inject in their site and run the script. By using...