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CVE-2026-44001

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

Published: May 13, 2026Updated: May 18, 2026 Sources: CVE List NVD BDUCWE-248
NVD MITRE
8.6CVSSHIGH
EPSS Score
0.3%
Top 74.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-248

Affected Products

vm2vm2 project
Library
OSS Libraries / npm
vm2patriksimek
Library
OSS Libraries / npm
vm2Node.js FoundationOSS Libraries
vm2 projectoss-projectOSS Librariesaka vm2
patriksimekoss-projectOSS Libraries
node.js foundationoss-projectUSOSS Librariesaka nodejs foundation, node foundation

Exploitability

Official Patch Available

References

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

Timeline

Published
May 13, 2026
Last Updated
May 18, 2026

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