October 12, 2026

CVE Watchtower

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CVE-2023-37903NVD

Vulnerability Summary

In vm2 for versions up to 3.9.19, Node.js custom inspect function allows attackers to escape the sandbox and run arbitrary code.

### Impact
Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox.

### Patches
None.

### Workarounds
None.

### References
PoC is to be disclosed on or after the 5th of September.

### Similarity with [CVE-2023-37466](https://nvd.nist.gov/vuln/detail/CVE-2023-37466)
While this advisory might look similar to [CVE-2023-37466](https://nvd.nist.gov/vuln/detail/CVE-2023-37466), it is a completely different way of escaping the sandbox.

### 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 [Xion](https://twitter.com/0x10n) (SeungHyun Lee) of [KAIST Hacking Lab](https://kaist-hacking.github.io/) for disclosing this vulnerability.
Severity Level
CRITICAL(9.8)
Published Date
Jul 21, 2023
Last Modified
Nov 4, 2025
Exploitation Status
No confirmed exploitation yet
CVE Record Status
Published
EPSS Score (30-Day)
Data Pending
Root Weakness (CWE)
CWE-78: OS Command Injection ↗
The software constructs all or part of an OS command using externally-influenced input, but does not properly neutralize special elements.
CVSS v3.1 Base Metrics — Score 9.8
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • vm2 <= 3.9.19
Patched Versions
Not provided by Private for this CVE.
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
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External References