Russian Currency Chart Security & Risk Analysis

The "russian-currency-chart" plugin v0.6 exhibits a generally strong security posture from a static analysis perspective, with no critical code signals like dangerous functions or raw SQL queries. The absence of known CVEs and a clean vulnerability history are positive indicators. However, there are significant areas of concern, particularly regarding output escaping, as only 20% of outputs are properly escaped. This represents a substantial risk of Cross-Site Scripting (XSS) vulnerabilities. Additionally, the complete lack of nonce and capability checks across all entry points is a critical oversight, leaving the plugin susceptible to CSRF attacks and unauthorized actions. While the attack surface appears small and primarily managed by cron events, the absence of any authentication or authorization checks on potential interaction points is a major weakness.