Nuxt devtools up to 3.3.0 nuxt:devtools:rpc plugin updateOptions/clearOptions/openInEditor missing authentication

Summaryinfo

A vulnerability marked as critical has been reported in Nuxt devtools up to 3.3.0. The affected element is the function updateOptions/clearOptions/openInEditor of the component nuxt:devtools:rpc plugin. This manipulation causes missing authentication. This vulnerability is registered as CVE-2026-71319. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Nuxt devtools up to 3.3.0. Affected by this vulnerability is the function updateOptions/clearOptions/openInEditor of the component nuxt:devtools:rpc plugin. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-71319 since 08/05/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Upgrading to version 3.3.1 eliminates this vulnerability.

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Productinfo

Vendor

• Nuxt

Name

• devtools

Version

• 3.0
• 3.1
• 3.2
• 3.3.0

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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