CVE-2026-44005CRITICAL 10.0EPSS p42.2%

CVE-2026-44005CVE-2026-44005

Description

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.

Scoring

CVSS 3.110.0 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
EPSS0.56% probability of exploitation · percentile 42.2% · 2026-06-19T12:03:05Z
Published2026-05-13
Last modified2026-05-14

Underlying weaknesses· 2

CWE-94CWE-1321

References

  1. https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
  2. https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq

2

TypeTargetConfidenceTier
WeaknessImproperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')cwe-13210%live
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.