CIELO API PIX, credit card, debit payment for WooCommerce Security & Risk Analysis

The plugin 'lkn-wc-gateway-cielo' v1.29.0 presents a mixed security posture. On the positive side, the static analysis indicates excellent practices regarding SQL queries and output escaping, with 100% of SQL using prepared statements and 98% of outputs properly escaped. The absence of any historical CVEs or recorded vulnerability types is also a strong positive indicator of prior security diligence. However, a significant concern arises from the substantial attack surface, where all 10 identified entry points (6 AJAX handlers and 4 REST API routes) lack authentication or permission checks. This leaves the plugin highly vulnerable to unauthorized access and potential exploitation of its functionalities. While taint analysis shows no critical or high severity unsanitized flows, the lack of authorization on numerous entry points could allow attackers to trigger unintended actions or access sensitive data through these exposed endpoints.