SEPA Girocode Security & Risk Analysis

The "sepa-girocode" v0.5.1 plugin exhibits several concerning security practices despite a limited attack surface. While the plugin has no exposed AJAX handlers or REST API routes without authentication, and no critical or high severity taint flows were identified, the codebase has significant weaknesses. The lack of any nonce or capability checks is a major concern, as it implies that even entry points that exist could be exploited without proper authorization. Furthermore, the plugin performs raw SQL queries without using prepared statements, which opens the door to SQL injection vulnerabilities. The presence of a medium severity Cross-Site Scripting (XSS) vulnerability in its history, despite the latest vulnerability being dated in the future (which is likely a data error and should be treated as a current concern), highlights a recurring issue with input sanitization and output escaping, further evidenced by only 58% of output being properly escaped. The use of the bundled TCPDF library also raises a flag, as bundled libraries can become outdated and introduce their own vulnerabilities if not actively maintained.