CVE-2026-71319 Nuxt.js Unauthenticated WebSocket RPC Call Leading to Remote Code Execution
Unauthenticated WebSocket RPC in Nuxt DevTools allows attackers to execute arbitrary code on developer machines via command injection.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-71319?
CVE-2026-71319 is a critical code injection vulnerability in nuxt devtools, published on 5 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2026-71319?
2 open source packages ship an affected version, including @nuxt/devtools.
| Package | Affected | Fixed in |
|---|---|---|
@nuxt/devtools npm | All versions | 3.3.1 |
@nuxt/devtools npm | All versions | 3.3.1 |
How do I fix CVE-2026-71319?
Upgrade @nuxt/devtools to 3.3.1 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-71319 being exploited?
There is no known exploitation of CVE-2026-71319 in the wild and no public exploit code.
Sources
Also known as GHSA-279x-mwfv-vcqv.