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CVE-2026-47200 nuxt CVE debrief

CVE-2026-47200 is a vulnerability in Nuxt, an open-source web development framework for Vue.js. Versions 3.11.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, when experimental.componentIslands is enabled (default in Nuxt 4), any .server.vue file under pages/ is automatically registered as a server island under the key page_<routeName> and exposed via the /__nuxt_island/:name endpoint. Until this fix, requests through that endpoint rendered the page component directly via the SSR renderer without instantiating Vue Router, which meant route middleware declared on the page (including definePageMeta({ middleware })) did not run. This issue has been patched in versions 3.21.6 and 4.4.6.

Vendor
nuxt
Product
Unknown
CVSS
MEDIUM 6.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-15
Advisory published
2026-06-12
Advisory updated
2026-06-15

Who should care

Developers using Nuxt versions 3.11.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6 should be aware of this vulnerability and take steps to upgrade to a patched version.

Technical summary

The vulnerability allows for unauthorized access to page components, potentially leading to security issues. The CVSS score for this vulnerability is 6.3, indicating a medium severity.

Defensive priority

MEDIUM

Recommended defensive actions

  • Upgrade to Nuxt version 3.21.6 or later
  • Upgrade to Nuxt version 4.4.6 or later

Evidence notes

CVE-2026-47200 has been patched in versions 3.21.6 and 4.4.6. For more information, see [ref-4](https://github.com/nuxt/nuxt/pull/35092) and [ref-5](https://github.com/nuxt/nuxt/security/advisories/GHSA-hg3f-28rg-4jxj).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-47200 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-47200

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-47200 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-47200

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.