Image CAPTCHA for Contact Form 7 and WPForms by HookAndHook (DSGVO/GDPR) Security & Risk Analysis

The "contact-form-7-image-captcha" plugin v3.3.28 exhibits a mixed security posture. On the positive side, there are no known CVEs, indicating a historically stable record. The static analysis reveals a limited attack surface, with only one shortcode and no AJAX handlers or REST API routes exposed. Furthermore, the absence of dangerous functions, file operations, and external HTTP requests are good signs. However, several concerns arise from the code analysis. The low percentage of properly escaped output (17%) is a significant weakness, suggesting a high risk of cross-site scripting (XSS) vulnerabilities. The fact that none of the entry points have capability checks or nonce checks is also worrying, as it means any user could potentially interact with the shortcode in unintended ways. The SQL query usage is also concerning, with half of the queries not using prepared statements, which could lead to SQL injection vulnerabilities.

While the taint analysis reported no flows, this might be due to the limited scope or nature of the tested code paths. The lack of capability checks and nonce checks significantly weakens the overall security, even with a small attack surface. The poorly escaped output is a direct pathway for XSS attacks. The vulnerability history is a strong point, but it does not negate the identified weaknesses in the current version. In conclusion, while the plugin has a clean vulnerability record, the current version has significant security concerns related to output sanitization and lack of authorization checks, which require immediate attention.