Nuxt: Improper Resolution of Path Equivalence (CVE-2026-119200)

What is affected, what to do

Update @nuxt/nitro-server to version 4.6.3, nuxt to version 4.6.3.

Affected

• Nuxt gte 4.6.0, < 4.6.3..*
• Nuxt Nitro-server gte 4.6.0, < 4.6.3..*

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Metrics

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2

NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

Read in glossary

Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.

CRA

The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

Read in glossary

From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.

ISO/IEC 27001

ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

Read in glossary

Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

export default defineEventHandler((event) => {
  if (event.path.startsWith('/admin') && !isAuthenticated(event)) {
    throw createError({ statusCode: 401 })
  }
})

// server/middleware/0.dot-segments.ts
export default defineEventHandler((event) => {
  if (/(?:^|\/)\.{1,2}(?:\/|$)/.test(event.path.split('?')[0])) {
    throw createError({ statusCode: 404 })
  }
})

Source: OSV (Open Source Vulnerabilities), GitHub Security Advisories, NVD (NIST), cvelistv5

Vendors and products

• Nuxt Nuxt

Weakness classes (CWE)

• CWE-41Improper Resolution of Path Equivalence

  Base

  The product is vulnerable to file system contents disclosure through path equivalence. Path equivalence involves the use of special characters in file and directory names. The associated manipulations are intended to generate multiple names for the same object.

  Entry at MITRE CWE-41

• CWE-436Interpretation Conflict

  Class

  Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

  Entry at MITRE CWE-436

• CWE-863Incorrect Authorization

  Class

  The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

  Entry at MITRE CWE-863

References & sources

• github.comnuxt/nuxt/commit/45463f8b58487e387149ebfb704d6a0834b3a450x_refsource_MISC, web
• github.comnuxt/nuxt/releases/tag/v4.6.3x_refsource_MISC, web
• github.comnuxt/nuxt/security/advisories/GHSA-9v7c-q64q-vv33x_refsource_CONFIRM, web
• NVD (NIST)vuln/detail/CVE-2026-119200advisory
• github.comnuxt/nuxtpackage

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

1. 29.10.2026ReceivedGitHub

   CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

   Weakness type: CWE-436, CWE-41, CWE-863

   Description added or changed

   New references:

   • https://github.com/nuxt/nuxt/commit/45463f8b58487e387149ebfb704d6a0834b3a450
   • https://github.com/nuxt/nuxt/releases/tag/v4.6.3
   • https://github.com/nuxt/nuxt/security/advisories/GHSA-9v7c-q64q-vv33
   Show 9 original changes

   Individual changes of this event as published by NVD

   Type	Action	Before	After
   Description	added	—	Nuxt is an open-source web development framework for Vue.js. From 4.6.0 until 4.6.3, Nuxt resolves literal or percent-encoded dot segments before rendering a page while Nitro routing, server/middleware checks, and server route rules evaluate the unresolved path. A request such as /%2e/admin can therefore render app/pages/admin.vue and its server-rendered data while checks keyed to /admin, redirects, or per-route security headers do not apply. API handlers, appMiddleware, Nuxt 3, and Nuxt 4.0.0 through 4.5.x are not affected, and exploitation requires a client that sends dot segments without browser normalization. This issue is fixed in version 4.6.3.
   CVSS	added	—	AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
   Weakness type (CWE)	added	—	CWE-436
   Weakness type (CWE)	added	—	CWE-41
   Weakness type (CWE)	added	—	CWE-863
   Affected versions (publisher)	added	—	New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/119xxx/CVE-2026-119200.json">CVE-2026-119200</a>
   Reference	added	—	https://github.com/nuxt/nuxt/commit/45463f8b58487e387149ebfb704d6a0834b3a450
   Reference	added	—	https://github.com/nuxt/nuxt/releases/tag/v4.6.3
   Reference	added	—	https://github.com/nuxt/nuxt/security/advisories/GHSA-9v7c-q64q-vv33

   Source identifier: security-advisories@github.com