CVE-2021-21270
OctopusDSC is a PowerShell module with DSC resources that can be used to install and configure an Octopus Deploy Server and Tentacle agent. In OctopusDSC version 4.0.977 and earlier a customer API key used to connect to Octopus Server is exposed via logging in plaintext.
This vulnerability is patched in version 4.0.1002.
Source: CVE-2021-21270