TI-2026-49977 Aliases CVE-2026-71319 GHSA-279x-mwfv-vcqv

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

MEDIUM 44CWE-306Published 2026-08-05 · Updated 2026-08-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Security bypass, Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-306 and CWE-94.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00629 50th percentileScored 2026-11-07

Fix Fixed devtools (nuxt): 3.3.1@nuxt/devtools (npm): 3.3.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
nuxt	devtools	before 3.3.1	3.3.1	Patch available	CNA
—	@nuxt/devtools (npm)	before 3.3.1	3.3.1	Patch available	GHSA-279x-mwfv-vcqv

devtools Vendornuxt Affected before 3.3.1 Fixed in 3.3.1 Patch available CNA
@nuxt/devtools (npm) Vendor— Affected before 3.3.1 Fixed in 3.3.1 Patch available GHSA-279x-mwfv-vcqv

Remediation

Fix · CNA devtools (nuxt) Fixed in 3.3.1
Fix · GHSA-279x-mwfv-vcqv @nuxt/devtools (npm) Fixed in 3.3.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-71319
2026-10-03 Alias added: GHSA-279x-mwfv-vcqv
2026-10-28 EPSS moved to the 50th–90th percentile

References

Other 4

TI-2023-03020 Code Injection in nuxt/nuxt CVSS 3.1CRITICAL 9.8
TI-2024-28339 Server-Side Request Forgery (SSRF) in nuxt-icon CVSS 3.1HIGH 8.6
TI-2024-22685 Remote code execution via the browser when running the test locally in nuxt CVSS 3.1HIGH 8.8
TI-2026-26689 Nuxt OG Image vulnerable to DoS via image generation CVSS 4.0MEDIUM 6.9
TI-2022-04037 Cross-site Scripting (XSS) - DOM in nuxt/framework CVSS 3.1MEDIUM 6.1
TI-2022-04036 Cross-site Scripting (XSS) - Reflected in nuxt/framework CVSS 3.1MEDIUM 6.1

See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences