vm2 Sandbox Escape vulnerability

Answer in brief

CVE-2023-32314 records a Critical severity (CVSS 9.8) vulnerability in vm2 Sandbox Escape vulnerability. The current sources do not mark it as known exploited. The current feed maps vm2 (npm). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 15, 2023Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps vm2 (npm). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
vm2npm	>=0 <3.9.18	3.9.18

Recommended response

Check inventory. Check lockfiles and deployed manifests for vm2.
Review the reported fix. Update vm2 to 3.9.18 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 15, 2023
Evidence: source:osv:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

A sandbox escape vulnerability exists in vm2 for versions up to 3.9.17. It abuses an unexpected creation of a host object based on the specification of `Proxy`. ### Impact A threat actor can bypass the sandbox protections to gain remote code execution rights on the host running the sandbox. ### Patches This vulnerability was patched in the release of version `3.9.18` of `vm2`. ### Workarounds None. ### References PoC - https://gist.github.com/arkark/e9f5cf5782dec8321095be3e52acf5ac ### For more information If you have any questions or comments about this advisory: - Open an issue in [VM2](https://github.com/patriksimek/vm2) Thanks to @arkark (Takeshi Kaneko) of GMO Cybersecurity by Ierae, Inc. for disclosing this vulnerability.

Quoted source text, attributed separately from HOL analysis.