CVE-2026-47131

Description

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.

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: 0.07%• Percentile: 21%

Techniques & Countermeasures

• CWE-913•Improper Control of Dynamically-Managed Code Resources

  The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.

Affected Systems

• Npm•vm2

  < 3.11.4

• patriksimek•vm2

  < 3.11.4

References (4)

• https://github.com/patriksimek/vm2/security/advisories/GHSA-v6mx-mf47-r5wg
• https://github.com/patriksimek/vm2/commit/27c525f4615e2b983f122e2bed327d810126f5c8
• https://github.com/patriksimek/vm2
• https://github.com/patriksimek/vm2/releases/tag/v3.11.4