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CVE-2026-45669— Nuxt: Reflected XSS in `navigateTo()` external redirect

Quick assessment

Affected
nuxt nuxt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nuxt是Nuxt团队开源的一个免费的开源框架。 Nuxt 3.4.3至3.21.6之前版本和4.0.0-alpha.1至4.4.6之前版本存在跨站脚本漏洞，该漏洞源于对 navigateTo() 函数中 URL 的清理不当，仅替换引号而未编码其他特殊字符，可能导致攻击者注入任意 HTML/JavaScript 脚本。

AI Predicted 8.1 Difficulty: Easy EPSS 0.28% · P19

Affected Version Matrix 2

VendorProduct Version RangeStatus
nuxt nuxt >= 3.4.3, < 3.21.6 affected
>= 4.0.0-alpha.1, < 4.4.6 affected
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I. Basic Information for CVE-2026-45669

Vulnerability Information
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Vulnerability Title
Nuxt: Reflected XSS in `navigateTo()` external redirect
Source: CVE Program / CVE List V5
Vulnerability Description
Nuxt is an open-source web development framework for Vue.js. From versions 3.4.3 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, navigateTo() with external: true generates a server-side HTML redirect body containing a <meta http-equiv="refresh"> tag. The destination URL is only sanitized by replacing " with %22, leaving <, >, &, and ' unencoded. An attacker who can influence the URL passed to navigateTo(url, { external: true }) can break out of the content="…" attribute and inject arbitrary HTML/JavaScript that executes under the application's origin. 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:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面属性中脚本转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Netty 跨站脚本漏洞
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 3.4.3至3.21.6之前版本和4.0.0-alpha.1至4.4.6之前版本存在跨站脚本漏洞，该漏洞源于对 navigateTo() 函数中 URL 的清理不当，仅替换引号而未编码其他特殊字符，可能导致攻击者注入任意 HTML/JavaScript 脚本。
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

Vendor Product Affected Versions CPE Subscribe
nuxt nuxt >= 3.4.3, < 3.21.6 -

II. Public POCs for CVE-2026-45669

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III. Intelligence Information for CVE-2026-45669

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Patches & Fixes for CVE-2026-45669 (1)

Vendor Advisories for CVE-2026-45669 (1)

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-2026-45670 Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA
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
Same vendor: nuxt
Same weakness: CWE-83

V. Comments for CVE-2026-45669

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