CVE-2026-42089 | Yeoman Environment provides an API to discover, create, and … | CVSS 8.6 HIGH

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.

Metadata

CVE ID: CVE-2026-42089
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-04-23 19:17 UTC
Published: 2026-06-16 16:15 UTC
Last updated: 2026-06-16 17:24 UTC
Primary CWE: CWE-829
CWE-829: Inclusion of Functionality from Untrusted Control S…
Vendor / Product: yeoman / environment
Sources: cve.org · NVD

Severity & Metrics

8.6 HIGH CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
yeoman	environment	—	>= 2.9.0, < 6.0.1

Weakness (CWE)

CWE	Source	Description
CWE-829	cna	CWE-829: Inclusion of Functionality from Untrusted Control Sphere

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.6	HIGH	3.1	cna	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References (3)

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