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CVE-2026-100722: Product identification pending

Severity

8.9 (HIGH)

Affected versions

Before 3.12.2

Fixed version

3.12.2

Patch status

Patched

Published

2026-09-27T02:17:18.817

Modified

2026-09-27T02:17:19.200

Why it matters

High-severity vulnerability requiring prioritized review.

Recommended admin actions

• Review and patch based on exposure, asset criticality, and business impact.
• Compare installed versions against the affected version range in the advisory.

Technical summary

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled() on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If an embedder exposes a constructable host function whose constructor returns a native rejected Promise, an untrusted script executed via VM.run can invoke it with `new` and ignore the result; the rejected host Promise crosses the bridge unhandled and, under Node's strict unhandled-rejection policy, is promoted to an uncaught exception that terminates the host process.

View the official NVD record for CVE-2026-100722

CVE data is sourced from NVD/CNA records and optional enrichment. Validate against the vendor advisory before taking production action.