CVE-2026-44001 Details
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.
A sandbox escape vulnerability has been identified in vm2 versions through 3.10.5. This vulnerability allows sandboxed code to crash the host Node.js process by using a Promise constructor that triggers an unhandled rejection, which then propagates to the host and causes a process crash. The issue arises because the Promise executor can create an error with a Symbol name, access its stack, and generate a host-realm TypeError. Since this error is unhandled, it leads to a crash. The vulnerability is present in all applications using vm2, regardless of the 'allowAsync' setting, and creates a continuous denial-of-service loop by repeatedly crashing the process after it restarts.
Users are advised to update vm2 to version 3.11.0, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 18, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2026:50850 | redhat-SADP | |
| https://access.redhat.com/security/cve/CVE-2026-44001 | redhat-SADP | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2477208 | redhat-SADP | |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44001.json | redhat-SADP | |
| https://github.com/patriksimek/vm2/security/advisories/GHSA-hw58-p9xv-2mjh | CISA-ADP | ExploitVendor Advisory |
| https://github.com/patriksimek/vm2/security/advisories/GHSA-hw58-p9xv-2mjh | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-248 | Uncaught Exception | redhat-SADP |
| CWE-248 | Uncaught Exception | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vm2 project vm2 | < 3.11.0 |
CPE
Remediation
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Change History
8 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 6, 2026 | CVE Modified | redhat-SADP |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 18, 2026 | CVE Modified | CISA-ADP |
| May 14, 2026 | Initial Analysis | [email protected] |
| May 13, 2026 | New CVE Received | [email protected] |