Check Last Login Security & Risk Analysis

The "check-last-login" plugin version 0.6 exhibits a generally positive security posture based on the provided static analysis. The absence of any identified AJAX handlers, REST API routes, shortcodes, or direct file operations significantly limits the potential attack surface. Furthermore, the absence of dangerous functions, external HTTP requests, and taint flows with unsanitized paths are strong indicators of secure coding practices in these areas. The plugin also has no recorded vulnerability history, which is a positive sign of its long-term stability and security.

However, there are critical concerns regarding its handling of data. The presence of SQL queries that are not using prepared statements is a significant risk, potentially leading to SQL injection vulnerabilities. Additionally, the lack of proper output escaping for all identified outputs means that any data displayed to users could be vulnerable to cross-site scripting (XSS) attacks. The complete absence of nonce checks and capability checks also suggests a lack of robust authorization and protection against common WordPress attack vectors. While the plugin has no known CVEs, the identified code-level vulnerabilities present a clear and present danger that requires immediate attention. It is crucial to address the SQL injection and XSS risks to improve the plugin's overall security.