Vulnerability-Lookup

CVE-2026-71319 (GCVE-0-2026-71319)

Vulnerability from cvelistv5 – Published: 2026-08-05 21:26 – Updated: 2026-08-07 03:55

Title

Nuxt.js Unauthenticated WebSocket RPC Call Leading to Remote Code Execution

Summary

Nuxt is an open-source web development framework for Vue.js. Prior to 3.3.1, Nuxt DevTools (development mode only) exposes a bidirectional RPC channel over the Vite HMR WebSocket via the nuxt:devtools:rpc plugin. On affected versions the channel has no authentication: any client that can reach the Vite HMR endpoint (ws://<host>:<port>/, subprotocol vite-hmr) can call RPC methods, with no token, handshake, or origin check before the channel is established. The updateOptions(), clearOptions(), and openInEditor() methods do not enforce the ensureDevAuthToken check that the other mutating methods use. openInEditor() reads the persisted behavior.openInEditor value and passes it to the launch-editor package, which spawns it as a child process. That value is settable through the equally unauthenticated updateOptions(). An attacker who can reach the HMR port can therefore chain updateOptions('behavior', { openInEditor: '<command>' }) then openInEditor('<any-existing-file>') to execute an arbitrary program on the developer's machine. This issue is fixed in 3.3.1.

Severity

9.6 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-06 00:00 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')
CWE-306 - Missing Authentication for Critical Function

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7838 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/nuxt/nuxt/security/advisories/…	x_refsource_CONFIRM
https://github.com/nuxt/devtools/commit/a7b2718b9…	x_refsource_MISC
https://github.com/nuxt/devtools/releases/tag/v3.3.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
nuxt	devtools	Affected: < 3.3.1	guessed

Show details on NVD website

JSON

To clipboard

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}

FKIE_CVE-2026-71319

Vulnerability from fkie_nvd - Published: 2026-08-05 22:17 - Updated: 2026-10-24 15:10

Severity

9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/nuxt/devtools/commit/a7b2718b930766e1ffb0640259d53f5b041a50b4
	security-advisories@github.com	https://github.com/nuxt/devtools/releases/tag/v3.3.1
	security-advisories@github.com	https://github.com/nuxt/nuxt/security/advisories/GHSA-279x-mwfv-vcqv

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "devtools",
          "vendor": "nuxt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.3.1"
            }
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      "lang": "en",
      "value": "Nuxt is an open-source web development framework for Vue.js. Prior to 3.3.1, Nuxt DevTools (development mode only) exposes a bidirectional RPC channel over the Vite HMR WebSocket via the nuxt:devtools:rpc plugin. On affected versions the channel has no authentication: any client that can reach the Vite HMR endpoint (ws://\u003chost\u003e:\u003cport\u003e/, subprotocol vite-hmr) can call RPC methods, with no token, handshake, or origin check before the channel is established. The updateOptions(), clearOptions(), and openInEditor() methods do not enforce the ensureDevAuthToken check that the other mutating methods use. openInEditor() reads the persisted behavior.openInEditor value and passes it to the launch-editor package, which spawns it as a child process. That value is settable through the equally unauthenticated updateOptions(). An attacker who can reach the HMR port can therefore chain updateOptions(\u0027behavior\u0027, { openInEditor: \u0027\u003ccommand\u003e\u0027 }) then openInEditor(\u0027\u003cany-existing-file\u003e\u0027) to execute an arbitrary program on the developer\u0027s machine. This issue is fixed in 3.3.1."
    },
    {
      "lang": "es",
      "value": "Nuxt es un framework de desarrollo web de c\u00f3digo abierto para Vue.js. Antes de la versi\u00f3n 3.3.1, Nuxt DevTools (solo en modo de desarrollo) expone un canal RPC bidireccional a trav\u00e9s del WebSocket HMR de Vite mediante el plugin nuxt:devtools:rpc. En las versiones afectadas, el canal no tiene autenticaci\u00f3n: cualquier cliente que pueda alcanzar el endpoint HMR de Vite (ws://[host]:[port]/, subprotocolo vite-hmr) puede llamar a m\u00e9todos RPC, sin token, handshake o verificaci\u00f3n de origen antes de que se establezca el canal. Los m\u00e9todos updateOptions(), clearOptions() y openInEditor() no aplican la verificaci\u00f3n ensureDevAuthToken que utilizan los otros m\u00e9todos mutadores. openInEditor() lee el valor persistido behavior.openInEditor y lo pasa al paquete launch-editor, que lo genera como un proceso hijo. Ese valor es configurable a trav\u00e9s del igualmente no autenticado updateOptions(). Un atacante que pueda alcanzar el puerto HMR puede, por lo tanto, encadenar updateOptions(\u2019behavior\u2019, { openInEditor: \u2019[command]\u2019 }) y luego openInEditor(\u2019[any-existing-file]\u2019) para ejecutar un programa arbitrario en la m\u00e1quina del desarrollador. Este problema est\u00e1 solucionado en la versi\u00f3n 3.3.1."
    }
  ],
  "id": "CVE-2026-71319",
  "lastModified": "2026-10-24T15:10:00.190",
  "metrics": {
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
          "version": "3.1"
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    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-279x-mwfv-vcqv"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-279X-MWFV-VCQV

Vulnerability from github – Published: 2026-08-05 21:27 – Updated: 2026-08-05 21:27

Summary

Unauthenticated Nuxt DevTools RPC allows arbitrary command execution on the developer's host

Details

Impact

Nuxt DevTools (development mode only) exposes a bidirectional RPC channel over the Vite HMR WebSocket via the nuxt:devtools:rpc plugin. On affected versions the channel has no authentication: any client that can reach the Vite HMR endpoint (ws://<host>:<port>/, subprotocol vite-hmr) can call RPC methods, with no token, handshake, or origin check before the channel is established. The updateOptions(), clearOptions(), and openInEditor() methods do not enforce the ensureDevAuthToken check that the other mutating methods use.

openInEditor() reads the persisted behavior.openInEditor value and passes it to the launch-editor package, which spawns it as a child process. That value is settable through the equally unauthenticated updateOptions(). An attacker who can reach the HMR port can therefore chain updateOptions('behavior', { openInEditor: '<command>' }) then openInEditor('<any-existing-file>') to execute an arbitrary program on the developer's machine.

The HMR port is reachable by a process on the same host, by any peer on the LAN when the dev server is bound with nuxi dev --host, or by a malicious website the developer visits while the dev server is running (a browser can open the HMR WebSocket cross-origin). Impact is limited to development environments; production builds do not run DevTools.

Patches

Fixed in @nuxt/devtools@3.3.1. Because nuxt depends on @nuxt/devtools through a ^3.x range, updating is a lockfile refresh / reinstall; no nuxt release is required.

Workarounds

Update @nuxt/devtools to a patched version.
Do not run the dev server bound to a non-loopback interface (nuxi dev --host) on an untrusted network.
Disable DevTools entirely with devtools: { enabled: false } in nuxt.config.

References

GHSA-279x-mwfv-vcqv
launch-editor: https://www.npmjs.com/package/launch-editor

Severity

9.6 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@nuxt/devtools"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-71319"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306",
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-05T21:27:39Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nNuxt DevTools (development mode only) exposes a bidirectional RPC channel over the Vite HMR WebSocket via the `nuxt:devtools:rpc` plugin. On affected versions the channel has no authentication: any client that can reach the Vite HMR endpoint (`ws://\u003chost\u003e:\u003cport\u003e/`, subprotocol `vite-hmr`) can call RPC methods, with no token, handshake, or origin check before the channel is established. The `updateOptions()`, `clearOptions()`, and `openInEditor()` methods do not enforce the `ensureDevAuthToken` check that the other mutating methods use.\n\n`openInEditor()` reads the persisted `behavior.openInEditor` value and passes it to the `launch-editor` package, which spawns it as a child process. That value is settable through the equally unauthenticated `updateOptions()`. An attacker who can reach the HMR port can therefore chain `updateOptions(\u0027behavior\u0027, { openInEditor: \u0027\u003ccommand\u003e\u0027 })` then `openInEditor(\u0027\u003cany-existing-file\u003e\u0027)` to execute an arbitrary program on the developer\u0027s machine.\n\nThe HMR port is reachable by a process on the same host, by any peer on the LAN when the dev server is bound with `nuxi dev --host`, or by a malicious website the developer visits while the dev server is running (a browser can open the HMR WebSocket cross-origin). Impact is limited to development environments; production builds do not run DevTools.\n\n### Patches\n\nFixed in `@nuxt/devtools@3.3.1`. Because `nuxt` depends on `@nuxt/devtools` through a `^3.x` range, updating is a lockfile refresh / reinstall; no `nuxt` release is required.\n\n### Workarounds\n\n- Update `@nuxt/devtools` to a patched version.\n- Do not run the dev server bound to a non-loopback interface (`nuxi dev --host`) on an untrusted network.\n- Disable DevTools entirely with `devtools: { enabled: false }` in `nuxt.config`.\n\n### References\n\n- GHSA-279x-mwfv-vcqv\n- `launch-editor`: https://www.npmjs.com/package/launch-editor",
  "id": "GHSA-279x-mwfv-vcqv",
  "modified": "2026-08-05T21:27:39Z",
  "published": "2026-08-05T21:27:39Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-279x-mwfv-vcqv"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nuxt/nuxt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unauthenticated Nuxt DevTools RPC allows arbitrary command execution on the developer\u0027s host"
}

Sightings

Author	Source	Type	Date	Other

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Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

CVE-2026-71319 (GCVE-0-2026-71319)

FKIE_CVE-2026-71319

GHSA-279X-MWFV-VCQV

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