CVE-2026-44005CWE-1321CWE-653CWE-94code-injection

CVE-2026-44005

Critical · published May 13, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
57.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00828 · 57.1th percentile
Weaknesses
CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'); CWE-653 · Improper Isolation or Compartmentalization; CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-05-13T22:16Z
Affected products (1)
ProductVersionsFixed in
vm2_project/vm2≥ 3.9.6, < 3.11.03.11.0
References (6)
https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq · [email protected]https://access.redhat.com/errata/RHSA-2026:50850 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-44005 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2477205 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq · 134c704f-9b21-4f2e-91b3-4a467353bcc0https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
EPSS history
Timeline
  • 13 MAY 17:40Z
    vm2: Sandbox escape
    cvelistv5