High 8.6Published Jun 16, 2026

CVE-2026-42089yeoman-environment Vulnerable to Arbitrary Package Installation without User Confirmation

Updated under an hour ago (Oct 27, 2026, 4:00 PM ET)

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Every CVE for yeoman environment

Exploited in the last 30 days

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.

CVSS: 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-829
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

yeoman environment yeoman:environment (from the name)	from 2.9.0, < 6.0.1	CNA record

References

References

https://github.com/yeoman/environment/security/advisories/GHSA-vv9j-gjw2-j8wp	x-refsource-confirm
https://github.com/yeoman/environment/pull/753	x-refsource-misc
https://github.com/yeoman/environment/commit/78d2af7e60294784b8a8b3b3b5099c6874b6a1fa	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.