CVE-2026-45670Disclosure(nuxt / nuxt\/rspack-builder)

LOWCVSS 5.4 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-749

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • nuxt\/rspack-builder
  • nuxt\/webpack-builder

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
nuxt\/rspack-buildernuxt\/webpack-builder

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-06-12: 2Technical Details · 2026-06-12: 106-12
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-45670 Source Code Disclosure in Nuxt Rspack and Webpack Builder Dev Server https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-45670

    Post summary

    The post indicates a source code disclosure for Nuxt Rspack and Webpack Builder Dev Server related to CVE-2026-45670, but provides no PoC, exploit, patch, or detailed technical details.

    0000058
    4.0K followersView on X
  • CVE@CVEnew
    General

    CVE-2026-45670 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 … https://www.cve.org/CVERecord?id=CVE-2026-45670

    Post summary

    The post announces the existence of CVE-2026-45670, providing affected packages and version ranges, but offers no PoC, exploit code, active exploitation evidence, or patch details.

    00000145
    57.6K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appnuxtnuxt\/rspack-builder-node.js-
Appnuxtnuxt\/webpack-builder-node.js-

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