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CVE-2026-128072 @nuxt/webpack-builder and @nuxt/rspack-builder dev server serves built source to DNS rebinding pages

3.1 low

Low (3.1).

On this page
Nuxt 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.

Severity

CVSS 3.1

3.1 low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE
CWE-346 Origin Validation Error
OWASP Top 10
A07:2025 Authentication Failures
Published
Modified
Assigned by
GitHub_M (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • @nuxt:rspack-builder
  • @nuxt:webpack-builder
  • nuxt:nuxt

Versions

From the CNA's record in the CVE List.

ProductAffected
nuxt>= 3.0.0, < 4.6.4
@nuxt webpack-builder>= 3.0.0, < 4.6.4
@nuxt rspack-builder>= 3.12.2, < 4.6.4

Attack patterns (CAPEC)

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits. More on the page of CWE-346 (16).

References

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