CVE-2026-43997 Details
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Symbol(nodejs.util.inspect.custom). This vulnerability is fixed in 3.11.0.
A sandbox escape vulnerability allowing remote code execution has been identified in vm2 versions through 3.10.5. This issue arises from the ability to access the host Object and use it to escape the sandbox. One exploitation method involves using the host Object's getOwnPropertySymbols method to retrieve a specific symbol that can be leveraged for malicious purposes.
Users are advised to update to vm2 version 3.11.0 or later, where this vulnerability has been patched.
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 13, 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-2026-43997 | redhat-SADP | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2477203 | redhat-SADP | |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43997.json | redhat-SADP | |
| https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-653 | Improper Isolation or Compartmentalization | redhat-SADP |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vm2 project vm2 | < 3.11.0 |
CPE
Remediation
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Change History
12 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 7, 2026 | CVE Modified | redhat-SADP |
| Sep 4, 2026 | CVE Modified | [email protected] |
| Sep 4, 2026 | CVE Modified | CISA-ADP |
| Sep 4, 2026 | CVE Modified | redhat-SADP |
| 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 | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 14, 2026 | Initial Analysis | [email protected] |
| May 13, 2026 | CVE Modified | CISA-ADP |
| May 13, 2026 | New CVE Received | [email protected] |