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CVE-2026-92937: Product identification pending

Severity

10 (CRITICAL)

Vendor

VM2

Affected versions

vm2 prior to 3.11.7

Fixed version

vm2 3.11.7

Patch status

Patched

Published

2026-09-17T14:17:58.517

Modified

2026-09-17T14:17:58.690

Why it matters

This critical sandbox escape vulnerability (CVE-2026-92937) in vm2 allows untrusted code within the sandbox to execute arbitrary commands on the host Node.js process. This can lead to full system compromise if exploited, as an attacker could gain control with the privileges of the host application.

Recommended admin actions

• Upgrade vm2 to version 3.11.7 immediately to apply the fix.
• Identify all systems running vm2 and determine their current version.
• Review applications using vm2 for exposure of host-realm Promises to the sandbox.
• Monitor host Node.js processes for unusual activity or unauthorized command execution.

Technical summary

vm2 3.11.6 is vulnerable to a sandbox escape leading to remote code execution in the host Node.js process. The fix for GHSA-m283-3h24-438v is incomplete: the bridge gate at lib/bridge.js:1624 identity-checks only the direct call target when deciding whether to rebuild/sanitise a rejected host Promise value. Registering the rejection handler through Function.prototype.call or .apply indirection (e.g., p.then.call(p, undefined, cb)) makes the intercepted target host Function.prototype.call, so the sanitiser never runs and the raw host error reaches sandbox code with its own properties intact. If an embedder exposes a host-realm Promise to the sandbox (an async host function bridged via the sandbox option, or a NodeVM external module's async method) and that Promise rejects with an Error carrying a non-primitive own property referencing a host object (for example err.detail = process), untrusted code in the sandbox obtains a fully functional proxy to that host object and can execute arbitrary commands with the privileges of the host process (e.g., e.detail.mainModule.require('child_process').execSync(…)). The direct p.then(undefined, cb), bind, and Reflect.apply forms are correctly sanitised. Fixed in vm2 3.11.7.

View the official NVD record for CVE-2026-92937

AI-enriched (HIGH confidence). Validate against the vendor advisory before taking production action.