wpShopGermany IT-RECHT KANZLEI < 2.4 - Unauthenticated RCE via Predictable API Token

Description

The plugin does not generate its API authentication token securely, deriving it from data the requester controls and creating it as a side effect of the check that is supposed to validate it, allowing unauthenticated attackers to predict the token and use the access it grants to write arbitrary files, leading to remote code execution.

The window is an installation where the plugin is active but has never been configured, which is the state of every install between activation and the first visit to its settings screen.