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CVE-2026-47139

8.6 · HIGH

vm2 is an open source vm/sandbox for Node.js.

Published Jun 12, 2026CWE-693EPSS 0.49%

Overview

CVE-2026-47139 is a high-severity vulnerability. It was published on June 12, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to http, https, http2, net, dgram, tls, dns, and dns/promises is blocked. However, Node.js also exposes underscored internal HTTP builtins such as _http_client and _http_server. These are not blocked when the public modules are excluded. Sandboxed code can use these internal builtins to make outbound HTTP requests and open listening HTTP sockets even though the public network modules are denied. This issue has been patched in version 3.11.4.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/patriksimek/vm2/commit/436053e30eecbabd487e2fd2959c137ac34e2bb1GitHubgithub.com/patriksimek/vm2/releases/tag/v3.11.4GitHubgithub.com/patriksimek/vm2/security/advisories/GHSA-r9pm-gxmw-wv6pGitHubgithub.com/patriksimek/vm2/security/advisories/GHSA-r9pm-gxmw-wv6p

How CyberStrike helps

Frequently asked questions

What is CVE-2026-47139?

CVE-2026-47139 is a high-severity vulnerability. It was published on June 12, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2026-47139?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-47139?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-47139?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-47139 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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