Nuxt up to 3.21.6/4.4.6 on Linux default permission

Summaryinfo

A vulnerability, which was classified as critical, was found in Nuxt up to 3.21.6/4.4.6 on Linux. The affected element is an unknown function. The manipulation results in default permission. This vulnerability is identified as CVE-2026-56301. The attack is only possible with local access. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Nuxt up to 3.21.6/4.4.6 on Linux. Affected is some unknown functionality. The manipulation with an unknown input leads to a default permission vulnerability. CWE is classifying the issue as CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. This is going to have an impact on confidentiality. CVE summarizes:

Nuxt 4.0.0 before 4.4.7 and 3.18.0 before 3.21.7, when running the development server (nuxt dev) on Linux, binds the vite-node IPC server to an abstract-namespace Unix socket without permission restrictions, allowing local users to enumerate and connect. Unprivileged co-resident users can exploit the unprotected module request handler to read arbitrary files such as .env and SSH keys through the SSR plugin pipeline. Production builds are unaffected, as the IPC server runs only in development.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-56301 since 06/20/2026. The exploitability is told to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1222 by the MITRE ATT&CK project.

Upgrading to version 3.21.7 or 4.4.7 eliminates this vulnerability. Applying the patch 1f9f4767a8725104da9bee872bb8d35246f25ae5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Nuxt

Version

• 3.21.0
• 3.21.1
• 3.21.2
• 3.21.3
• 3.21.4
• 3.21.5
• 3.21.6
• 4.4.0
• 4.4.1
• 4.4.2
• 4.4.3
• 4.4.4
• 4.4.5
• 4.4.6

License

• open-source

Website

• Product: https://github.com/nuxt/nuxt/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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