CVE-2026-119200: Nuxt path traversal via dot segment normalization bypass

CVE-2026-119200 · Severity: medium · CVSS 6.5 · Published 2026-10-29

Nuxt is a popular Vue.js web framework used to build server-rendered web applications. Versions 4.6.0 through 4.6.2 fail to consistently normalize dot segments (like /%2e/) in request paths, allowing attackers to bypass security checks and access pages that should be restricted. An attacker can request a page with encoded dots to retrieve sensitive server-rendered content while circumventing security headers, redirects, and middleware rules that guard the legitimate path.

Technologies: @nuxt/nitro-server (npm), nuxt (npm), Nuxt. Vendors: npm, Nuxt.

Quick answers

Is CVE-2026-119200 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-119200 being exploited in the wild.
How severe is CVE-2026-119200?
Medium severity, with a CVSS score of 6.5, published 29 October 2026.
Which products and versions are affected?
@nuxt/nitro-server (npm) >= 4.6.0, < 4.6.3, SEMVER:introduced=4.6.0,fixed=4.6.3; nuxt (npm) >= 4.6.0, < 4.6.3, SEMVER:introduced=4.6.0,fixed=4.6.3; Nuxt 4.6.0 to 4.6.2.
Is there a fix for CVE-2026-119200?
Yes. @nuxt/nitro-server (npm): upgrade to 4.6.3 or later; nuxt (npm): upgrade to 4.6.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-119200 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-119200?
Check whether you run @nuxt/nitro-server (npm), nuxt (npm) or Nuxt at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • @nuxt/nitro-server (npm): upgrade to 4.6.3 or later
    npm install @nuxt/nitro-server@4.6.3
  • nuxt (npm): upgrade to 4.6.3 or later
    npm install nuxt@4.6.3

Technical details

The vulnerability occurs because Nuxt resolves dot segments during page rendering but Nitro routing, server middleware, and route rules evaluate the unresolved path, creating a mismatch. Requests like /%2e/admin can render app/pages/admin.vue with its server-rendered data while security checks keyed to /admin do not apply. This affects Nuxt 4.6.0–4.6.2 but not earlier versions (4.5.x and below), Nuxt 3, or API handlers and appMiddleware, and requires a client that does not perform browser normalization on dot segments.

Affected products

  • Nuxt Nuxt 4.6.0 to 4.6.2

Identifiers

  • CVE-2026-119200
  • GHSA-9v7c-q64q-vv33

Timeline

  • 2026-10-29: disclosed
  • 2026-10-27: patched

References

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