CVE-2026-15239
Simple CAPTCHA with Cloudflare Turnstile < 1.42.0 - Unauthenticated Turnstile Protection Bypass via Reusable Forminator Cache Key
- State
- Published
- Severity
- 5.3 Medium
- Published
- Aug 7, 2026
- Updated
- Aug 7, 2026
- Reserved
- Jul 9, 2026
Description
The Simple CAPTCHA with Cloudflare Turnstile WordPress plugin before 1.42.0 does not bind its Turnstile validation cache to the single-use challenge token in its Forminator integration, instead keying it to an attacker-controlled, reusable request value, allowing unauthenticated attackers to solve one challenge and then replay token-less form submissions for a short window, defeating the anti-abuse protection the plugin provides.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | WPScan |
Weaknesses
- CWE-345 Insufficient Verification of Data Authenticity
Affected Products
| Product | Versions |
|---|---|
Simple CAPTCHA with Cloudflare TurnstileUnknown |
|
References
- https://wpscan.com/vulnerability/28d3bda2-501c-4eeb-9184-c343367adbea/exploitvdb-entrytechnical-description
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