Clearblue® Due Date Calculator Security & Risk Analysis

The 'clearblue-due-date-calculator' plugin, in version 1.0.4, exhibits a generally positive security posture based on the provided static analysis. There are no identified AJAX handlers, REST API routes, shortcodes, or cron events, which significantly limits the potential attack surface. Furthermore, the absence of dangerous functions, file operations, and external HTTP requests, along with the use of prepared statements for all SQL queries, are strong indicators of secure coding practices.

The primary concern highlighted by the static analysis is the low percentage of properly escaped output (18%). With 17 outputs analyzed and only 18% properly escaped, there's a significant risk of Cross-Site Scripting (XSS) vulnerabilities. Although taint analysis did not reveal any unsanitized paths in this specific analysis, the lack of output escaping creates a fertile ground for attackers to inject malicious scripts if user-supplied data is directly reflected in the output without proper sanitization.

The plugin's vulnerability history is clean, with no recorded CVEs. This suggests that the plugin has either been developed with security in mind or has not attracted attention from vulnerability researchers, which is a positive sign. However, the lack of output escaping remains a critical weakness that could lead to vulnerabilities, even in the absence of historical issues. The plugin's strengths lie in its minimal attack surface and secure data handling for SQL, but the weak output escaping is a notable risk.