GHSA-vv9j-gjw2-j8wp
yeoman-environment Vulnerable to Arbitrary Package Installation without User Confirmation
Details
### Impact
`yeoman-environment` versions `>= 2.9.0` and `< 6.0.1` 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.
### Patches
Upgrade to `yeoman-environment` `6.0.1`, which adds an interactive confirmation prompt before installation ([PR #753](https://github.com/yeoman/environment/pull/753)).
### Workarounds
None.
### Resources
- [Fix commit 78d2af7](https://github.com/yeoman/environment/commit/78d2af7e60294784b8a8b3b3b5099c6874b6a1fa)
Are you affected?
Enter the version of the package you're using.
Affected packages
2.9.0 Fixed in: 6.0.1 npm install yeoman-environment@6.0.1