Improper URL Validation causes Mirantis Container Cloud Lens Extension to open external programs

Lack of validation of URLs causes Mirantis Container Cloud Lens Extension before v3.1.1 to open external programs other than the default browser to perform sign on to a new cluster. An attacker could host a webserver which serves a malicious Mirantis Container Cloud configuration file and induce the victim to add a new cluster via its URL. This issue affects: Mirantis Mirantis Container Cloud Lens Extension v3 versions prior to v3.1.1.