CVE-2026-45670
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
@nuxt/rspack-builder
PublishedJun 12, 2026
First seenJun 12, 2026
Weakness typeCWE-749CWE-749
How to fix
Update
- @nuxt/rspack-builder3.21.6, 4.4.6 or later
- nuxt nuxt\/rspack-builder3.21.5, 4.4.5 or later
- nuxt nuxt\/webpack-builder3.21.5, 4.4.5 or later
- @nuxt/webpack-builder3.21.6, 4.4.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @nuxt/rspack-buildernpm | 3.15.4 ≤ v < 3.21.6, 4.0.0-alpha.1 ≤ v < 4.4.6 | 3.21.6, 4.4.6 |
| nuxt nuxt\/rspack-builder | 3.12.2 ≤ v < 3.21.5, 4.0.0 ≤ v < 4.4.5 | 3.21.5, 4.4.5 |
| nuxt nuxt\/webpack-builder | 3.0.0 ≤ v < 3.21.5, 4.0.0 ≤ v < 4.4.5 | 3.21.5, 4.4.5 |
| @nuxt/webpack-buildernpm | 3.15.4 ≤ v < 3.21.6, 4.0.0-alpha.1 ≤ v < 4.4.6 | 3.21.6, 4.4.6 |
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