Stylish Google Sheet Reader – Embed Google Sheets as Interactive Tables with Built-in Form Submissions Security & Risk Analysis

The plugin 'stylish-google-sheet-reader' v5.3 exhibits a mixed security posture. While it boasts a zero attack surface for common entry points like AJAX, REST API, shortcodes, and cron events, indicating good practice in limiting direct user interaction with sensitive functions, the code analysis reveals several areas of concern. A significant percentage of SQL queries are not using prepared statements, and a substantial portion of output is not properly escaped, suggesting potential for SQL injection and cross-site scripting (XSS) vulnerabilities. The presence of a taint flow with unsanitized paths and a high severity taint analysis result further exacerbates these risks, pointing to a real possibility of code execution or sensitive data compromise if an attacker can manipulate input to exploit these flaws. The plugin's vulnerability history, with two medium-severity CVEs related to XSS, reinforces these concerns and suggests a pattern of past input sanitization issues. Although there are no currently unpatched vulnerabilities, the historical data and current code signals indicate that the plugin requires careful review and remediation to improve its overall security.