CVE-2026-43997

Name: CVE-2026-43997
Creator: NVD / NIST
Published: 2026-05-13T18:16:16.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10EPSS 0.74%

Last modified Jun 17, 2026

CVE-2026-43997 is a critical-severity vulnerability rated 10/10 on the CVSS scale. vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

10/10

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

EPSS Probability

0.74%

49.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Vm2 Project	Vm2	< 3.11.0

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6Exploit, Vendor Advisory
https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6Exploit, Vendor Advisory

Timeline

Published: May 13, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-43997?

How severe is CVE-2026-43997?

CVE-2026-43997 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.

How do I fix CVE-2026-43997?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-43997?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST