CVE-2021-39134

A flaw was found in nodejs-arborist. On case-insensitive file systems (such as macOS and Windows), Arborist’s internal data structure did not see multiple dependencies as separate items that could coexist within the same level in the node_modules hierarchy when they differ only in the case of their name. This issue, combined with a symlink dependency such as file:/some/path, allows an attacker to create a situation in which arbitrary contents are written to any location on the filesystem. The highest threat from this vulnerability is to integrity and system availability.