The Courier Guy Shipping for WooCommerce Security & Risk Analysis

The plugin "the-courier-guy" v5.4.0 exhibits a concerning security posture due to a significant number of unprotected entry points. Specifically, all 5 REST API routes lack permission callbacks and 1 out of 3 AJAX handlers is not protected by authentication checks. This creates a broad attack surface that could be exploited by unauthenticated users. The presence of the `unserialize` function is also a red flag, as it can be a vector for remote code execution if not handled with extreme care and input validation. While the taint analysis did not reveal critical or high-severity issues in the analyzed flows, the presence of unsanitized paths warrants caution.