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CVE-2026-53722— Nuxt: Reflected XSS in `<NuxtLink>` via unsanitised `javascript:` or `data:` URL

Quick assessment

Affected
nuxt nuxt
Exploitation
Public or AI PoC available; prioritize validation
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 3.21.7之前版本和4.4.7之前版本存在跨站脚本漏洞，该漏洞源于<NuxtLink>未验证绑定到to或href属性的URL方案，可能导致反射型DOM-based跨站脚本攻击。

AI Predicted 8.1 Difficulty: Easy EPSS 0.29% · P22

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 2

VendorProduct Version RangeStatus
nuxt nuxt < 3.21.7 affected
>= 4.0.0, < 4.4.7 affected
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I. Basic Information for CVE-2026-53722

Vulnerability Information
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Vulnerability Title
Nuxt: Reflected XSS in `<NuxtLink>` via unsanitised `javascript:` or `data:` URL
Source: CVE Program / CVE List V5
Vulnerability Description
Nuxt is an open-source web development framework for Vue.js. Prior to versions 3.21.7 and 4.4.7, <NuxtLink> did not validate the URL scheme of values bound to its to or href props before rendering them into the href attribute of the underlying <a> element. When an application binds attacker-controlled input (a query parameter, a CMS field, a user-supplied profile URL) to <NuxtLink :to> or :href, the attacker can supply a javascript: or vbscript: URL that is reflected verbatim into the rendered markup. Clicking the link executes the supplied script in the origin of the Nuxt application, resulting in reflected DOM-based cross-site scripting. A data:text/html,... payload reflected through the same sink does not execute in the application's origin but enables a same-tab phishing surface anchored to a legitimate application link. The same value was exposed to consumers of the component's custom slot via the href and route.href props, so applications that re-bind those values to their own anchors were affected identically. This issue has been patched in versions 3.21.7 and 4.4.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Nuxt 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 3.21.7之前版本和4.4.7之前版本存在跨站脚本漏洞，该漏洞源于<NuxtLink>未验证绑定到to或href属性的URL方案，可能导致反射型DOM-based跨站脚本攻击。
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 < 3.21.7 -

II. Public POCs for CVE-2026-53722

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: SSR-rendered href="javascript:fetch(...PROOF_34c7f9c223a9f9bf)" reflected verbatim into <NuxtLink> (unvalidated script URL, CVE-2026-53722)
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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claude_code · 3786 chars
GitHub 复现环境（可 clone 直接跑）
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III. Intelligence Information for CVE-2026-53722

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Patches & Fixes for CVE-2026-53722 (2)

Vendor Advisories for CVE-2026-53722 (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-2026-45669 Nuxt: Reflected XSS in `navigateTo()` external redirect
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-79