CVE-2026-44001

HIGH8.6

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

Published May 13, 2026

Modified 2 weeks ago

Details

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

DETECTION

https://github.com/patriksimek/vm2/security/advisories/GHSA-hw58-p9xv-2mjh

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-44001

CVSS Analysis

CVSS v3.1

8.6

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

ChangedS:C

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

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

Weakness Type (CWE)

Other

CWE-248

Ecosystems

Timeline

PublishedMay 13, 2026

ModifiedMay 18, 2026