CVE-2026-26956CWE-693

vm2: WASM Sandbox Escape (Node 25 only)

Critical · published May 4, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
59.9
In the wild
Unconfirmed
What it is

vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00921 · 59.9th percentile
Weakness
CWE-693 · Protection Mechanism Failure
Published
2026-05-04T16:37Z
EPSS history
Timeline
  • 04 MAY 16:37Z
    vm2: WASM Sandbox Escape (Node 25 only)
    cvelistv5