TI-2026-34722 Aliases CVE-2026-47131 GHSA-v6mx-mf47-r5wg

vm2: Sandbox Escape

HIGH 82CWE-913Published 2026-06-12 · Updated 2026-06-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call({}.__lookupGetter__, Buffer, "__proto__"), Buffer.call.call({}.__lookupSetter__, Buffer, "__proto__"), and Node.js's ERR_INVALID_ARG_TYPE Error, the host's TypeError constructor can be obtained, which allows the escape from the sandbox. This allows attackers to run arbitrary code. This issue has been patched in version 3.11.4.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00757 55th percentileScored 2026-11-07

Fix Fixed vm2 (patriksimek): 3.11.4vm2 (npm): 3.11.4Red Hat: 3 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

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 3.11.4	3.11.4	Patch available	CNA
—	vm2 (npm)	before 3.11.4	3.11.4	Patch available	GHSA-v6mx-mf47-r5wg

vm2 Vendorpatriksimek Affected before 3.11.4 Fixed in 3.11.4 Patch available CNA
vm2 (npm) Vendor— Affected before 3.11.4 Fixed in 3.11.4 Patch available GHSA-v6mx-mf47-r5wg

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 3.11.4
Fix · GHSA-v6mx-mf47-r5wg vm2 (npm) Fixed in 3.11.4 Advisory →

Red Hat 3 advisories

RHSA-2026:50850 Released 2026-08-05 · Red Hat rating Important
Red Hat Ansible Automation Platform 2.1 security update
- Red Hat Ansible Automation Platform 2.1 registry.redhat.io/ansible-automation-platform/automation-portal
RHSA-2026:36754 Released 2026-07-08 · Red Hat rating Important
Red Hat Developer Hub 1.10.2 release.
- Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator
RHSA-2026:33574 Released 2026-06-30 · Red Hat rating Important
Red Hat Developer Hub 1.9.6 release.
- Red Hat Developer Hub 1.9 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Ansible Automation Platform 2.1	Fixed	RHSA-2026:50850
Red Hat Developer Hub 1.10	Fixed	RHSA-2026:36754
Red Hat Developer Hub 1.9	Fixed	RHSA-2026:33574

Not affected: 2 products

Red Hat Developer Hub 1.10
Red Hat Developer Hub 1.9

Timeline

2026-10-02 Threatist record created from CVE-2026-47131
2026-10-03 Alias added: GHSA-v6mx-mf47-r5wg
2026-10-16 EPSS moved to the 50th–90th percentile
2026-10-25 EPSS moved to the below the 50th percentile
2026-10-27 EPSS moved to the 50th–90th percentile

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-47131

Other 4

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