HarborGuard / CVE
Back to search
CRITICALCVE-2026-44005Published Modified CNA GitHub_M

CVE-2026-44005: vm2: Sandbox escape

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

Metrics

CVSS v3.1
10.0
Severity
CRITICAL
Fixed in
Affected Products
1
Affected packages
  • patriksimek / vm2
    >= 3.9.6, < 3.11.0
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
CVE-2026-44005: vm2: Sandbox escape | HarborGuard CVE