@nuxt/webpack-builder and @nuxt/rspack-builder dev server serves built source to DNS rebinding pages

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-128072
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-13 18:17:35 UTC
Updated2026-11-13 18:17:36 UTC
DescriptionNuxt is an open-source web development framework for Vue.js. From @nuxt/webpack-builder 3.0.0 and @nuxt/rspack-builder 3.12.2 until 4.6.4, the development middleware trusts Origin, Referer, or Sec-Fetch-Site when the Host header names the same attacker-controlled hostname. After DNS rebinding changes that hostname to a loopback address, a malicious page opened by a developer can read /_nuxt/*.js client chunks and inline source maps, exposing compiled application source, local filesystem paths, and developer-controlled values embedded in the client bundle. The attacker must know or guess the development-server port and induce the developer to open the malicious page; Chrome 142 and later and other Chromium-based browsers that enforce Local Network Access restrictions prompt before a public page can reach the loopback address. The default Vite builder and production builds are unaffected. This issue is fixed in version 4.6.4.

Risk And Classification

Primary CVSS: v3.1 3.1 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Problem Types: CWE-346 | CWE-346 CWE-346: Origin Validation Error

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
3.1CNADECLARED3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nuxt Nuxt affected >= 3.0.0, < 4.6.4 Not specified
CNA @nuxt Webpack-builder affected >= 3.0.0, < 4.6.4 Not specified
CNA @nuxt Rspack-builder affected >= 3.12.2, < 4.6.4 Not specified

References

ReferenceSourceLinkTags
github.com/nuxt/nuxt/releases/tag/v4.6.4 [email protected] github.com
github.com/nuxt/nuxt/commit/8c11d965dad5bfc58d4c25e796915aec045acb78 [email protected] github.com
github.com/nuxt/nuxt/security/advisories/GHSA-x2wv-5868-p7v2 [email protected] github.com
github.com/nuxt/nuxt/commit/f8d64c9aa773a033596532365d455890da9da197 [email protected] github.com
github.com/nuxt/nuxt/commit/3c9645326a2b3f5cfa09c9a935db9b1825d560e7 [email protected] github.com
github.com/nuxt/nuxt/commit/3e1c7964e6843e1c5f218867a4ccd4cd00ad9ebb [email protected] github.com
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