What’s Vulnerable › Vulnerabilities

CVE-2026-92953: vm2 3.11.0 through 3.11.7 Prototype Pollution via TypedArray

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-09-18
• Weakness: CWE-913

Description

vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation. Attackers can use prototype-walking primitives to reach and modify host Uint8Array.prototype, %TypedArray%.prototype, and ArrayBuffer.prototype, causing host-created typed arrays to observe attacker-controlled properties after VM.run() returns.

Affected products

• patriksimek vm2: from 3.11.0 before 3.11.8 — fixed in 3.11.8

How to fix

Upgrade to a fixed version: patriksimek vm2 3.11.8. Check the vendor advisory for mitigations.

References

• https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr
• https://www.vulncheck.com/advisories/vm2-3.11.0-through-3.11.7-prototype-pollution-via-typedarray
• https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr

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