CVE-2026-45670— Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)
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I. Basic Information for CVE-2026-45670
Vulnerability Information
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Vulnerability Title
Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
暴露危险的方法或函数
Source: CVE Program / CVE List V5
Vulnerability Title
Nuxt 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nuxt是Nuxt团队开源的一个免费的开源框架。 nuxt 3.15.4至3.21.6之前版本和4.0.0-alpha.1至4.4.6之前版本存在权限许可和访问控制问题漏洞，该漏洞源于对先前安全修复的不完整修复，可能导致开发服务器绑定到非回环地址时，开发者在同一网络打开恶意站点从而导致源代码泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-45670
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Patches & Fixes for CVE-2026-45670 (1)
Vendor Advisories for CVE-2026-45670 (2)
Same Patch Batch · nuxt · 2026-06-12 · 7 CVEs total
| CVE-2026-53721 | Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and th | |
| CVE-2026-53722 | Nuxt: Reflected XSS in `<NuxtLink>` via unsanitised `javascript:` or `data:` URL | |
| CVE-2026-45669 | Nuxt: Reflected XSS in `navigateTo()` external redirect | |
| CVE-2026-47200 | Nuxt: Route middleware not enforced when rendering `.server.vue` pages via `/__nuxt_island | |
| CVE-2026-49993 | @nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when | |
| CVE-2026-46342 | Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-c |
IV. Related Vulnerabilities
Same product: nuxt
- CVE-2026-72744
Nuxt before 4.5.1 Information Disclosure via Chrome DevTools - CVE-2026-71321
Nuxt: Unauthenticated CPU exhaustion parsing and hashing the - CVE-2026-71320
Nuxt: Server-Side Remote Code Execution via Runtime Template - CVE-2026-71318
Nuxt: Unauthorized Component Instantiation via Server Island - CVE-2026-71316
Nuxt runtime payload cache discloses another user's SSR data
Same vendor: nuxt
- CVE-2026-72744
Nuxt before 4.5.1 Information Disclosure via Chrome DevTools - CVE-2026-71321
Nuxt: Unauthenticated CPU exhaustion parsing and hashing the - CVE-2026-71320
Nuxt: Server-Side Remote Code Execution via Runtime Template - CVE-2026-71319
Nuxt.js Unauthenticated WebSocket RPC Call Leading to Remote - CVE-2026-71318
Nuxt: Unauthorized Component Instantiation via Server Island
Same weakness: CWE-749
V. Comments for CVE-2026-45670
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