CVE-2026-47140

Description

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM blocks several dangerous Node.js builtins such as module, worker_threads, cluster, vm, repl, and inspector. However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach host-side execution primitives. This allows sandboxed code to bypass the intended builtin restrictions and execute code in the host process. This issue has been patched in version 3.11.4.

CVSS Metrics

• v3.1•CRITICAL•Score: 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.13%• Percentile: 33%

Techniques & Countermeasures

• CWE-693•Protection Mechanism Failure

  The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Affected Systems

• Npm•vm2

  < 3.11.4

• patriksimek•vm2

  < 3.11.4

References (4)

• https://github.com/patriksimek/vm2/security/advisories/GHSA-rp36-8xq3-r6c4
• https://github.com/patriksimek/vm2/commit/a1ed47a98d1cc36cb48c0d566d55889688e0b59b
• https://github.com/patriksimek/vm2
• https://github.com/patriksimek/vm2/releases/tag/v3.11.4