GHSA-2x6f-57hp-86fxPublishedWithdrawn

Nuxt - Arbitrary File Read via World-Connectable vite-node IPC Socket on Linux

Exploitation and risk

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cve-program · CVE-2026-56301

Published

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.

Source published: 23 Jun 2026 12:13:02 UTC
Source modified: 23 Jun 2026 14:34:24 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1 · 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

euvd · EUVD-2026-38436

Published

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

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datePublished: Jun 23, 2026, 12:13:02 PM

dateUpdated: Jun 23, 2026, 2:34:24 PM

Source published: Jun 23, 2026, 12:13:02 PM (timezone not stated)
Source modified: Jun 23, 2026, 2:34:24 PM (timezone not stated)
Saved here: 11 Nov 2026 14:05:46 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 4.0 · 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

nvd · CVE-2026-56301

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-276

Original publisher date fields

published: 2026-06-23T13:16:45.373

lastModified: 2026-06-25T18:39:47.410

1 source CPE criteria · context only

cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 23 Jun 2026 13:16:45 UTC
Source modified: 25 Jun 2026 18:39:47 UTC
Saved here: 25 Oct 2026 14:19:05 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Secondary · 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

osv · GHSA-2x6f-57hp-86fx

Withdrawn

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-534h-c3cw-v3h9. This link is maintained to preserve external references. ### Original Description 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.

Source published: 23 Jun 2026 15:32:36 UTC
Source modified: 23 Sep 2026 21:45:08 UTC
Saved here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS_V4 · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Publisher rating · MODERATE

osv · GHSA-534h-c3cw-v3h9

Published

### Impact When running `nuxt dev` on Linux (Node.js 20+, outside Docker / StackBlitz), Nuxt's internal vite-node IPC server binds to a Linux abstract-namespace Unix socket (`\0nuxt-vite-node-<pid>-<ts>.sock`). Abstract sockets have no filesystem inode and therefore no permission bits: any local UID on the host that can read `/proc/net/unix` can enumerate the socket and connect to it. The IPC server does not perform any peer-credential or shared-secret check before dispatching requests. The `module` request type passes its `moduleId` field straight into Vite's SSR `fetchModule()`, which is not gated by Vite's HTTP-layer `server.fs.allow` deny-list. A co-resident unprivileged local user can therefore request paths like `/home/<dev>/project/.env?raw` or `~/.ssh/id_rsa?raw` and read the developer's secrets through the dev server's SSR plugin pipeline. The `resolve` request type additionally enables filesystem probing. This affects developers running `nuxt dev` on shared multi-tenant Linux hosts (lab machines, shared bastions, CI runners shared between jobs without per-job container isolation). It does not affect: - Production builds (`nuxt build` / `nuxt start`). The IPC server only runs in development. - macOS or Windows developers. - Docker / StackBlitz environments, which already fall back to a filesystem socket. - Single-user laptops or per-job containerised CI. ### Patches Fixed in `[email protected]` (commit [`1f9f4767`](https://github.com/nuxt/nuxt/commit/1f9f4767a8725104da9bee872bb8d35246f25ae5)) and backported to `[email protected]` (commit [`c293bf95`](https://github.com/nuxt/nuxt/commit/c293bf9503ccb3bc9559bff4a1f592f99063c9ea)). The fix removes the abstract-namespace branch entirely. The IPC server now always binds to a filesystem Unix socket under the OS temp directory and explicitly `chmod 0600`s it after `listen()`, restricting connections to the owning UID. If the chmod fails for any reason, the server closes rather than serve requests on an unrestricted channel. ### Workarounds If you cannot upgrade immediately on an affected host: - Run `nuxt dev` inside a container or VM with no other tenants. Docker already triggers the filesystem-socket fallback in vulnerable versions and that fallback is unaffected. - Bind the dev process to a single-user namespace (`unshare -U`, rootless containers). - Restrict `/proc/net/unix` visibility via `hidepid=2` mount options where applicable, though this is partial mitigation only. ### References - Affected file: `packages/vite/src/plugins/vite-node.ts` - CWE-276: Incorrect Default Permissions ### Credit Reported by Anthropic / Claude as part of Anthropic's coordinated vulnerability disclosure programme, reference ANT-2026-MSNKZFAT. Thanks to the Anthropic security team for the report and the detailed reproduction. Independently reported by [@alcls01111](https://github.com/alcls01111) via GitHub's coordinated disclosure flow (`GHSA-5gvc-46gq-948j`), closed as a duplicate of this advisory.

Source published: 16 Jun 2026 13:49:10 UTC
Source modified: 23 Sep 2026 21:45:07 UTC
Saved here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Publisher rating · MODERATE