Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, the bufferAllocLimit enforcement in lib/setup-sandbox.js does not cover Buffer.concat(list, totalLength) or Buffer.from(arrayLike) with an attacker-controlled length, allowing sandbox code to perform large synchronous host external-memory allocations that bypass the configured cap and can exhaust the host process. This issue is fixed in version 3.11.6.
Related Weaknesses (CWE)
References
- https://github.com/patriksimek/vm2/commit/3ffb315512e634cf85c447375e85d6c83d00a4
- https://github.com/patriksimek/vm2/releases/tag/3.11.6
- https://github.com/patriksimek/vm2/security/advisories/GHSA-gmc2-2x9w-cgh9
- https://github.com/patriksimek/vm2/security/advisories/GHSA-gmc2-2x9w-cgh9
FAQ
What is CVE-2026-47683?
CVE-2026-47683 is a documented vulnerability. vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, the bufferAllocLimit enforcement in lib/setup-sandbox.js does not cover Buffer.concat(list, totalLength) or Buffer.from(arrayLike) with a...
How severe is CVE-2026-47683?
CVSS scoring is not yet available for CVE-2026-47683. Check NVD for updates.
Is there a patch for CVE-2026-47683?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.