CVE-2026-44005

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.

CVSS 3.1

10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

EPSS

0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-25)

CWEs

CWE-94, CWE-1321, CWE-653

Published

2026-05-13

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• vm2_project:vm2

Packages (OSV)

References

• https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
• https://access.redhat.com/errata/RHSA-2026:50850
• https://access.redhat.com/security/cve/CVE-2026-44005
• https://bugzilla.redhat.com/show_bug.cgi?id=2477205
• https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq

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