What’s Vulnerable › Vulnerabilities

CVE-2026-47131: vm2: Sandbox Escape

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-12 · updated 2026-10-26
• Weakness: CWE-913

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.

Affected products

• patriksimek vm2: before 3.11.4

References

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

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