CVE-2026-44001

HIGH

vm2: Sandbox Escape via Promise Constructor Unhandled Rejection (Process Crash DoS)

Title source: cna
STIX 2.1

Description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, a sandbox escape vulnerability in vm2 v3.10.5 allows any sandboxed code to crash the host Node.js process via a single Promise constructor that triggers an unhandled rejection propagating to the host. The fix for CVE-2026-22709 (v3.10.2) only sanitized the onRejected callback in .then() and .catch() overrides and did not address the executor-to-unhandledRejection path. This vulnerability is fixed in 3.11.0.

References (1)

Core 1
Core References

Scores

CVSS v3 8.6
EPSS 0.0005
EPSS Percentile 16.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-248
Status published
Products (3)
npm/vm2 0 - 3.11.0npm
patriksimek/vm2 < 3.11.0
vm2_project/vm2 < 3.11.0
Published May 13, 2026
Tracked Since May 13, 2026