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

Status: published. Published: 2026-10-29. Updated: 2026-11-03.

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.

## Remediation

- fix: @nuxt/vite-builder (npm): GitHub reports patched versions 4.6.3. Check the advisory for the affected release branch. (source: GitHub GHSA-x287-wcfc-q46c) — https://github.com/nuxt/nuxt/security/advisories/GHSA-x287-wcfc-q46c
- fix: @nuxt/vite-builder (npm): OSV reports a fixed version 4.6.3. Check the advisory for supported release branches. (source: OSV GHSA-x287-wcfc-q46c) — https://github.com/advisories/GHSA-x287-wcfc-q46c

## Affected products and versions

- nuxt / nuxt: >= 4.6.0, < 4.6.3 (affected). Source: CNA: GitHub_M
-  / @nuxt/vite-builder (@nuxt/vite-builder): >= 4.6.0 < 4.6.3 (affected, GitHub advisory range). Source: GitHub GHSA-x287-wcfc-q46c
-  / @nuxt/vite-builder (@nuxt/vite-builder): ≥ 4.6.0; < 4.6.3 (affected, semver); OSV events: introduced 4.6.0; fixed 4.6.3. Source: OSV GHSA-x287-wcfc-q46c

## Severity and prioritization

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: GitHub_M

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.29% as of 2026-11-03; percentile 21.54%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-73

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/nuxt/nuxt/security/advisories/GHSA-x287-wcfc-q46c (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/nuxt/nuxt/commit/35856eb148bf8d6f1ad753c5b8b337c52b4fd6b3 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/nuxt/nuxt/commit/aec8129f68e9b870ca919f8f60e65a4608c8a6d8 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/nuxt/nuxt/releases/tag/v4.6.3 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/nuxt/nuxt/commit/35856eb148bf8d6f1ad753c5b8b337c52b4fd6b3 (security-advisories@github.com)

- https://github.com/nuxt/nuxt/commit/aec8129f68e9b870ca919f8f60e65a4608c8a6d8 (security-advisories@github.com)

- https://github.com/nuxt/nuxt/releases/tag/v4.6.3 (security-advisories@github.com)

- https://github.com/nuxt/nuxt/security/advisories/GHSA-x287-wcfc-q46c (security-advisories@github.com)

- https://github.com/nuxt/nuxt/security/advisories/GHSA-x287-wcfc-q46c (GitHub Security Advisories; advisory)

- https://github.com/advisories/GHSA-x287-wcfc-q46c (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-x287-wcfc-q46c (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-119198; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119198; retrieved 2026-11-03; source updated 2026-11-03

- GitHub Security Advisories: https://github.com/nuxt/nuxt/security/advisories/GHSA-x287-wcfc-q46c; retrieved 2026-11-04; source updated 2026-10-29

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-x287-wcfc-q46c; retrieved 2026-11-03; source updated 2026-10-30

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119198; retrieved 2026-11-03; source updated Not reported

Revision: b98694a7404c39876bac5181c1e9825138105ba1b64dd72a4967251b260ffdc4

Canonical: https://y2.dev/cve/CVE-2026-119198

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.