Single Sign-On – Professional SSO solution for WordPress Security & Risk Analysis

The "single-sign-on-sso" v2.1.2 plugin exhibits a generally positive security posture, with no known historical vulnerabilities or critical issues identified in the static analysis. The plugin correctly utilizes prepared statements for all SQL queries, which is a strong indicator of good database security practices and mitigates the risk of SQL injection. Furthermore, the absence of taint analysis findings, particularly for unsanitized paths and critical/high severity flows, suggests a well-managed data handling process within the plugin.

However, there are areas for improvement. The plugin has 12 total output escalations, with 67% properly escaped, leaving 33% of outputs potentially unescaped. This could open the door to cross-site scripting (XSS) vulnerabilities if user-supplied data is displayed without adequate sanitization. Additionally, while the plugin has two AJAX handlers, neither has capability checks, meaning any authenticated user could potentially trigger these actions, regardless of their role or permissions. The presence of file operations and external HTTP requests, while not inherently risky, warrants careful review for potential vulnerabilities that could be exploited by manipulating these functions.

Overall, the plugin demonstrates a commitment to secure coding by avoiding dangerous functions and using prepared statements. The lack of historical CVEs is also a positive sign. Nevertheless, the unescaped output and the absence of capability checks on AJAX handlers represent tangible security risks that should be addressed to further harden the plugin's security. Addressing these specific concerns would elevate the plugin's security to a more robust level.