NBP Kurs Walut Security & Risk Analysis

The "kursy-walut-nbp" plugin version 1.0.0 exhibits a mixed security posture. On the positive side, there are no identified critical or high severity vulnerabilities in its history, and static analysis reveals no dangerous functions, raw SQL queries, or external HTTP requests. The absence of taint analysis findings further suggests a generally clean codebase in terms of input sanitization for known attack vectors.

However, several areas raise significant concerns. The plugin has a complete lack of nonce checks and capability checks, which is particularly worrying given its file operation. Furthermore, a significant portion of its output (92%) is not properly escaped, creating a substantial risk of cross-site scripting (XSS) vulnerabilities. The presence of file operations without any apparent authentication or authorization mechanisms is a critical oversight that could lead to unauthorized file modifications or deletions.

In conclusion, while the plugin benefits from a clean vulnerability history and absence of common injection flaws, the severe lack of output escaping and the presence of file operations without proper security checks represent significant and exploitable weaknesses. These issues should be prioritized for immediate remediation to prevent potential security breaches.