CVE-2026-44001 HIGH

CVE-2026-44001: vm2: Sandbox Escape via Promise Constructor Unhandled Rejection (Process Crash DoS)

Vendor Patriksimek
Product vm2
Weakness CWE-248
Published May 13, 2026
Last update June 30, 2026
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
June 30, 2026 Record updated