TI-2026-64878 Aliases CVE-2026-100722 GHSA-2v2p-6j97-cjg9 GHSA-7rr2-8fr3-fjqx

vm2 before 3.12.2 Host Process Termination via Construct Trap

HIGH 72CWE-248Published 2026-09-27 · Updated 2026-09-28

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-248.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00315 24th percentileScored 2026-11-07

Fix Partial vm2 (patriksimek): 3.12.2vm2 (npm): 3.12.2Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
patriksimek	vm2	before 3.12.2	3.12.2	Patch available	CNA
—	vm2 (npm)	before 3.12.2	3.12.2	Patch available	GHSA-2v2p-6j97-cjg9

vm2 Vendorpatriksimek Affected before 3.12.2 Fixed in 3.12.2 Patch available CNA
vm2 (npm) Vendor— Affected before 3.12.2 Fixed in 3.12.2 Patch available GHSA-2v2p-6j97-cjg9

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:vm2_project:vm2::::::::	—	—	patriksimek

cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:*:*:* Versions — — ·patriksimek

Remediation

Fix · CNA vm2 (patriksimek) Fixed in 3.12.2
Fix · GHSA-2v2p-6j97-cjg9 vm2 (npm) Fixed in 3.12.2 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-09-27
patriksimek vm2 3.12.2
3 records Highest priority Priority HIGH 2 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2026-64877 vm2 before 3.12.2 Authorization Bypass via Custom ResolverPriority HIGH 76
- TI-2026-64879 vm2 before 3.12.2 Memory Disclosure via zlib Buffer PoolPriority MEDIUM 64
Show all 3 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Developer Hub 1	Affected	No fix yet: Fix deferred
Self-service automation portal 2	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-100722
2026-10-03 Alias added: GHSA-7rr2-8fr3-fjqx
2026-10-06 Alias added: GHSA-2v2p-6j97-cjg9
2026-10-06 Fix available: npm/[email protected] · GHSA-2v2p-6j97-cjg9
2026-10-06 CVSS score added · GHSA-2v2p-6j97-cjg9
2026-10-06 Weakness changed · GHSA-2v2p-6j97-cjg9
2026-10-06 5 new references · GHSA-2v2p-6j97-cjg9
2026-10-27 Affected versions changed · Red Hat

References

Advisory 2

Other 3

TI-2023-14382 Sandbox Escape in vm2 CVSS 3.1CRITICAL 10.0
TI-2023-13478 vm2 Sandbox Escape vulnerability CVSS 3.1CRITICAL 10.0
TI-2026-63070 vm2 before 3.12.1 Sandbox Escape via Promise Symbol.species CVSS 4.0CRITICAL 10.0
TI-2026-63067 vm2 before 3.12.1 Sandbox Escape RCE via Non-Strict Host Function CVSS 4.0CRITICAL 10.0
TI-2026-62623 vm2 before 3.11.6 Process-wide State Exposure via os and dns CVSS 4.0CRITICAL 10.0
TI-2026-62618 vm2 before 3.11.8 Sandbox Escape via NodeVM CVSS 4.0CRITICAL 10.0

See all 80 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences