Bug 2489315 (CVE-2026-42089)

Summary:	CVE-2026-42089 yeoman-environment: Yeoman Environment: Arbitrary code execution via unconfirmed package installation
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in Yeoman Environment. This vulnerability allows an attacker to install arbitrary packages and execute code during command-line interface (CLI) bootstrap. This occurs because the software installs missing local generator packages from caller-supplied names without user confirmation, particularly when downstream consumers pass attacker-controlled project configurations. The primary impact is arbitrary code execution.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Bug Depends On:	2491377, 2491379
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Description OSIDB Bzimport 2026-06-16 17:01:26 UTC

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.