CVE-2026-45670

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

Published Jun 12, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-6m52-m754-pw2g Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)
History
Type Values Removed Values Added
First Time appeared Nuxt nuxt\/rspack-builder
Nuxt nuxt\/webpack-builder
CPEs cpe:2.3:a:nuxt:nuxt\/rspack-builder:*:*:*:*:*:node.js:*:*
cpe:2.3:a:nuxt:nuxt\/webpack-builder:*:*:*:*:*:node.js:*:*
Vendors & Products Nuxt nuxt\/rspack-builder
Nuxt nuxt\/webpack-builder
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Nuxt
Nuxt nuxt
Vendors & Products Nuxt
Nuxt nuxt
Type Values Removed Values Added
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.
Title Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)
Weaknesses CWE-749
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 12, 2026, 2:18 PM
Reserved
May 12, 2026, 9:59 PM
Status
Analyzed
Published
Jun 12, 2026, 2:16 PM
Modified
Jun 17, 2026, 10:52 AM