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Critical, CVSS 10.0amended

vm2: NodeVM builtin: ['*'] exposes os and dns — process-wide observability reads AND writes that hijack the host (sibling class of GHSA-9g8x-92q2-p28f)

CVE-2026-92960GHSA-m5w8-4gq2-6f8x

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (vm2 3.11.6), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm vm2

    Affected
    <= 3.11.5
    Fixed in
    3.11.6

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
10.0 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
EPSS
  • CVE-2026-92960: 0.47% estimated exploitation activity in the next 30 days; percentile 41.03 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

NodeVM builtin: [''] exposes os and dns — process-wide observability reads AND writes that hijack the host (sibling class of GHSA-9g8x-92q2-p28f) CWE: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) chained with CWE-732 (Incorrect Permission Assignment for Critical Resource) and CWE-285 (Improper Authorization) — same class the maintainer codified as Defense Invariant #13 in lib/builtin.js and as Category 35 / GHSA-9g8x in docs/ATTACKS.md. CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L → 9.3 (Critical) (Scope = Changed because the data being read and the state being written both belong to the host process, not the sandbox. Confidentiality = High because os.userInfo() returns host UID/GID/username/homedir + os.networkInterfaces() returns the full host network topology including container/VM interfaces with IPs and MAC addresses. Integrity = High because dns.setServers() is a process-wide write that hijacks every subsequent DNS lookup the host makes —…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-m5w8-4gq2-6f8x

  2. Revision 2 · amended ·

    Amended from osv record GHSA-m5w8-4gq2-6f8x

  3. Revision 1 · created ·

    Published from ghsa record GHSA-m5w8-4gq2-6f8x

Agent brief

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# Patch Next advisory brief: CVE-2026-92960

Advisory: vm2: NodeVM `builtin: ['*']` exposes `os` and `dns` — process-wide observability reads AND writes that hijack the host (sibling class of GHSA-9g8x-92q2-p28f)
IDs: CVE-2026-92960, GHSA-m5w8-4gq2-6f8x
Record: https://patchnext.com/advisories/ghsa-m5w8-4gq2-6f8x (revision 3, source checked 26 Oct 2026, 13:01 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 10.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: vm2 3.11.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm vm2: affected <= 3.11.5; fixed in 3.11.6

## Suggested inspection (read-only)
- `npm ls vm2 --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on vm2.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-m5w8-4gq2-6f8x (GitHub-reviewed advisory GHSA-m5w8-4gq2-6f8x lists affected ranges: npm vm2 >=0 <=3.11.5)
- Verified: https://osv.dev/vulnerability/GHSA-m5w8-4gq2-6f8x (OSV record GHSA-m5w8-4gq2-6f8x lists affected ranges: npm vm2 >=0 <3.11.6 (fixed))

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