Tochka Bank: Internet-acquiring Security & Risk Analysis

The Tochka Bank Internet Acquiring plugin v1.0.0 exhibits a strong initial security posture based on static analysis. The absence of identified dangerous functions, raw SQL queries, file operations, or external HTTP requests is commendable. Importantly, all SQL queries use prepared statements, and the presence of a nonce check, albeit only one, is a positive sign. The limited attack surface with no exposed AJAX handlers, REST API routes, shortcodes, or cron events further contributes to its security.

However, the analysis is hindered by zero taint flow analysis, meaning potential data manipulation vulnerabilities that are not immediately apparent from function calls might be missed. The most significant concern arises from the lack of capability checks for any potential entry points, and the incomplete output escaping (81%) suggests a residual risk of Cross-Site Scripting (XSS) vulnerabilities. Given that there is no recorded vulnerability history, it's difficult to assess past security practices or recurring issues, but the current version appears to have learned from potential past mistakes or is developed with good security awareness.

In conclusion, while the plugin demonstrates good security practices in several key areas and has a clean vulnerability history, the lack of comprehensive taint analysis and the presence of partially unescaped output warrant attention. The absence of capability checks on any potential entry points is also a notable weakness that could be exploited if an attack surface were to be introduced in future versions. Overall, the plugin appears to be relatively secure for its current version and feature set, but ongoing vigilance and further analysis are recommended.