CVE-2026-42089
yeoman-environment Vulnerable to Arbitrary Package Installation without User Confirmation
CVSS Score
8.6
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-829 |
| Vendor | yeoman |
| Product | environment |
| Published | Jun 16, 2026 |
| Last Updated | Jun 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
yeoman / environment
>= 2.9.0, < 6.0.1