Anti-spam integrations accept challenge tokens on public forms and exchange them with an external verification service before a submission is allowed. Simple CAPTCHA with Cloudflare Turnstile version 1.43.2 has successfully completed the CleanTalk Plugin Security Certification process and received PSC-2026-65708. The review focused on settings permissions, key handling, challenge token validation, server side verification, form integration, whitelisting, failsafe behavior, and diagnostic logging.
| Name of | Simple CAPTCHA with Cloudflare Turnstile |
| Version | 1.43.2 |
| Active installations | 200,000+ |
| Description | Adds Cloudflare Turnstile protection to WordPress, WooCommerce, and supported form plugins with controls for appearance, language, whitelisting, failsafe behavior, and diagnostic logging. |
| Security | Successfully tested for: SQL Injection (SQLi) Cross-Site Scripting (XSS) – Stored and Reflected Cross-Site Request Forgery (CSRF) Authentication Vulnerabilities Authentication Bypass Exploits Privilege Escalation Buffer Overflow Denial-of-Service (DoS) vectors Data Leakage Vulnerabilities Insecure Dependency Usage Remote Code Execution (RCE) Risks Unauthorized File Access Insufficient Injection Protection Information Disclosure via Misconfigured Endpoints |
| CleanTalk Certification | Proudly earned the “Plugin Security Certification” (PSC) from CleanTalk, indicating adherence to stringent security standards. |
| Additional Information | Use Simple CAPTCHA with Cloudflare Turnstile with confidence backed by the “Plugin Security Certification” (PSC). Protect the site secret, complete the built-in API response test, select a failsafe policy that matches the site risk model, and review diagnostic logs without retaining sensitive form data. |
| Plugin Security Certification by CleanTalk |  |
| Logo of the plugin |  |
PSC by CleantalkJoin the community of developers who prioritize security. Highlight your plugin in the WordPress catalog.
Key Features
Simple CAPTCHA with Cloudflare Turnstile adds Cloudflare Turnstile to WordPress login, registration, password reset, and comment forms as well as WooCommerce and a broad set of supported form plugins. Administrators can choose the theme, language, appearance mode, submit button behavior, custom error text, logged-in user and IP exclusions, resource hints, failsafe behavior, and debug logging. The plugin also includes a built-in API response test for initial setup.
Security Assurance
The CleanTalk Plugin Security Certification evaluation examined permissions and request integrity for settings changes, site and secret key handling, challenge token input, remote verification responses, integration-specific enforcement, logged-in user and IP exclusions, failsafe decisions, error output, and diagnostic event logging.
The plugin has been successfully tested for:
✅ Information Leakage Vulnerabilities
✅ SQL Injection Vulnerabilities
✅ Cross-Site Scripting (XSS) Attacks
✅ Cross-Site Request Forgery (CSRF) Attacks
✅ Authentication and Authentication Bypass Vulnerabilities
✅ Privilege Escalation Vulnerabilities
✅ Buffer Overflow Vulnerabilities
✅ Denial-of-Service (DoS) Vulnerabilities
✅ Data Leakage Vulnerabilities
✅ Insecure Dependencies
✅ Code Execution Vulnerabilities
✅ File Unauthorized Access Vulnerabilities
✅ Insufficient Injection Protection
Conclusion
With PSC-2026-65708, Simple CAPTCHA with Cloudflare Turnstile version 1.43.2 demonstrates a strong security baseline for adding Cloudflare Turnstile checks to public WordPress forms. The certification covers administrative settings, credential handling, challenge validation, remote responses, supported form integrations, exclusions, failsafe behavior, and logging. Site owners should verify every enabled form after configuration and monitor changes to checkout or form templates that can affect widget placement.
Note: The date and certification information may change over time. It is advisable to verify the latest details on the plugin developer’s website.
