Contact Form 7 – Blacklist Unwanted Email Security & Risk Analysis

The "block-email-cf7" plugin version 1.1.0 exhibits a strong security posture based on the provided static analysis and vulnerability history. The absence of any identified vulnerabilities in its history is a significant positive indicator. The static analysis reveals a remarkably small attack surface, with no AJAX handlers, REST API routes, shortcodes, or cron events, and importantly, none of these entry points are unprotected. Furthermore, the code signals show no dangerous functions, file operations, or external HTTP requests, and critically, no nonce or capability checks are required, suggesting that the plugin might not handle sensitive operations or user input in a way that necessitates these checks.

However, the presence of a single SQL query that does not use prepared statements is a concern, even if it's only one instance. While no critical or high severity taint flows were detected, this specific SQL query represents a potential for SQL injection if the input feeding it is not rigorously sanitized upstream. The output escaping is also not perfect, with 33% of outputs not properly escaped, which could lead to cross-site scripting (XSS) vulnerabilities. Despite these minor concerns, the overall picture is one of a well-developed plugin with a low risk profile, especially given its clean vulnerability history.