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CVE-2026-42089

8.6 · HIGH

Yeoman Environment provides an API to discover, create, and run generators, and to configure where and how a generator is resolved.

Published Jun 16, 2026CWE-829EPSS 0.19%

Overview

CVE-2026-42089 is a high-severity vulnerability. It was published on June 16, 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 requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Yeoman Environment provides an API to discover, create, and run generators, and to configure where and how a generator is resolved. Versions 2.9.0 through 6.0.0 install missing local generator packages from caller-supplied package names without user confirmation. In downstream consumers that pass attacker-controlled project configuration into this path, this can result in arbitrary package installation and code execution during CLI bootstrap. The vulnerable method is installLocalGenerators(), which calls repository.install() directly without prompting the user. This issue has been fixed in version 6.0.0.

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/yeoman/environment/commit/78d2af7e60294784b8a8b3b3b5099c6874b6a1faGitHubgithub.com/yeoman/environment/pull/753GitHubgithub.com/yeoman/environment/security/advisories/GHSA-vv9j-gjw2-j8wp

How CyberStrike helps

Frequently asked questions

What is CVE-2026-42089?

CVE-2026-42089 is a high-severity vulnerability. It was published on June 16, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2026-42089?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. 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-2026-42089?

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-2026-42089?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-42089 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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