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CVE-2022-39266

9.6 · CRITICAL

isolated-vm is a library for nodejs which gives the user access to v8's Isolate interface.

Published Sep 29, 2022CWE-20EPSS 1.30%

Overview

CVE-2022-39266 is a critical-severity vulnerability. It was published on September 29, 2022 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

isolated-vm is a library for nodejs which gives the user access to v8's Isolate interface. In versions 4.3.6 and prior, if the untrusted v8 cached data is passed to the API through CachedDataOptions, attackers can bypass the sandbox and run arbitrary code in the nodejs process. Version 4.3.7 changes the documentation to warn users that they should not accept `cachedData` payloads from a user.

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/laverdet/isolated-vm/commit/218e87a6d4e8cb818bea76d1ab30cd0be51920e8GitHubgithub.com/laverdet/isolated-vm/commits/v4.3.7GitHubgithub.com/laverdet/isolated-vm/issues/379GitHubgithub.com/laverdet/isolated-vm/security/advisories/GHSA-2jjq-x548-rhpvGitHubgithub.com/laverdet/isolated-vm/commit/218e87a6d4e8cb818bea76d1ab30cd0be51920e8GitHubgithub.com/laverdet/isolated-vm/commits/v4.3.7GitHubgithub.com/laverdet/isolated-vm/issues/379GitHubgithub.com/laverdet/isolated-vm/security/advisories/GHSA-2jjq-x548-rhpv

How CyberStrike helps

Frequently asked questions

What is CVE-2022-39266?

CVE-2022-39266 is a critical-severity vulnerability. It was published on September 29, 2022 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2022-39266?

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-39266?

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-2022-39266?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-39266 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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