Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Argo CD before 2.1.9, 2.2.x before 2.2.4 and 2.3.x before 2.3.0-rc4 allows directory traversal related to Helm charts because of an error in helmTemplate in repository.go. For example, an attacker may be able to discover credentials stored in a YAML file.
CWE-22 - Path Traversal
Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.