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TI-2026-30457 Aliases CVE-2026-42089GHSA-vv9j-gjw2-j8wp

yeoman-environment Vulnerable to Arbitrary Package Installation without User Confirmation

Priority LOW 38CWE-829Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-829.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00172 6th percentileScored 2026-11-07
Fix Fixed environment (yeoman): 6.0.1yeoman-environment (npm): 6.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
yeomanenvironment2.9.0 to before 6.0.16.0.1Patch availableCNA
—yeoman-environment (npm)2.9.0 to before 6.0.16.0.1Patch availableGHSA-vv9j-gjw2-j8wp
  • environment Vendoryeoman Affected 2.9.0 to before 6.0.1 Fixed in 6.0.1 Patch available CNA
  • yeoman-environment (npm) Vendor— Affected 2.9.0 to before 6.0.1 Fixed in 6.0.1 Patch available GHSA-vv9j-gjw2-j8wp

Remediation

  • Fix · CNA environment (yeoman) Fixed in 6.0.1
  • Fix · GHSA-vv9j-gjw2-j8wp yeoman-environment (npm) Fixed in 6.0.1 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42089
  2. 2026-10-03 Alias added: GHSA-vv9j-gjw2-j8wp

References

Advisory 1

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences