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CVE-2026-15239— Simple CAPTCHA with Cloudflare Turnstile < 1.42.0 - Unauthenticated Turnstile Protection Bypass via Reusable Forminator Cache Key

Quick assessment

Affected
Unknown Simple CAPTCHA with Cloudflare Turnstile
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Simple CAPTCHA with Cloudflare Turnstile是WordPress基金会开源的一款集成Cloudflare Turnstile验证的简单验证码插件。 WordPress Simple CAPTCHA with Cloudflare Turnstile 1.42.0之前版本存在安全漏洞，该漏洞源于在Forminator集成中未将Turnstile验证缓存绑定到一次性挑战令牌，而是将其键控到攻击者可控的可重用请求值，可能导致未经身份验证的攻击者解决一个挑战

CVSS 5.3 · Medium EPSS 0.16% · P4

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Simple CAPTCHA with Cloudflare Turnstile < 1.42.0 affected
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I. Basic Information for CVE-2026-15239

Vulnerability Information
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Vulnerability Title
Simple CAPTCHA with Cloudflare Turnstile < 1.42.0 - Unauthenticated Turnstile Protection Bypass via Reusable Forminator Cache Key
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Simple CAPTCHA with Cloudflare Turnstile 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Simple CAPTCHA with Cloudflare Turnstile是WordPress基金会开源的一款集成Cloudflare Turnstile验证的简单验证码插件。 WordPress Simple CAPTCHA with Cloudflare Turnstile 1.42.0之前版本存在安全漏洞，该漏洞源于在Forminator集成中未将Turnstile验证缓存绑定到一次性挑战令牌，而是将其键控到攻击者可控的可重用请求值，可能导致未经身份验证的攻击者解决一个挑战
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Simple CAPTCHA with Cloudflare Turnstile 0 ~ 1.42.0 -

II. Public POCs for CVE-2026-15239

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III. Intelligence Information for CVE-2026-15239

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News Coverage for CVE-2026-15239 (1)

Same Patch Batch · Unknown · 2026-08-07 · 21 CVEs total

CVE-2026-15211 5.9 MEDIUM Subscriptions for WooCommerce < 2.0.1 - Payment Bypass via Attacker-Supplied PayPal Captur
CVE-2026-15148 5.3 MEDIUM WP Events Manager < 2.2.5 - Unauthenticated Payment Bypass and Booking Status Update via I
CVE-2026-14205 WP Events Manager < 2.2.5 - Subscriber+ Payment Bypass via 'qty' Parameter
CVE-2026-14943 Password Protected < 2.8.4 - Unauthenticated Sensitive Information Exposure via REST API
CVE-2026-14331 Subscribe2 < 10.46 - Reflected XSS via email Parameter
CVE-2026-15032 wpDiscuz < 7.6.60 - Unauthenticated Stored XSS via Image URL Conversion
CVE-2026-15215 Subscriptions for WooCommerce < 2.0.1 - Shop Manager+ Arbitrary Plugin Installation
CVE-2026-15214 Subscriptions for WooCommerce < 2.0.1 - Subscriber+ Subscription Detail Disclosure via IDO
CVE-2026-15359 Templately < 3.7.1 - Unauthenticated Administrator Templately Cloud Connection Overwrite
CVE-2026-15245 BNE Testimonials < 2.0.8.2 - Contributor+ Stored XSS via Slider Shortcode
CVE-2026-16030 MStore API < 4.21.0 - Unauthenticated Account Takeover via Firebase Phone Authentication
CVE-2026-16039 MStore API < 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR
CVE-2026-16038 MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways
CVE-2026-15361 Content Views < 4.5 - Subscriber+ SQL Injection via preview_request
CVE-2026-15386 Meow Gallery < 5.5.2 - Author+ Stored XSS via Attachment Alt-Text
CVE-2026-16262 Estatik < 4.3.3 - Login CSRF
CVE-2026-16041 MStore API < 4.21.0 - Unauthenticated Product Review Creation
CVE-2026-16263 WP Maps < 4.9.7 - Subscriber+ Local File Inclusion
CVE-2026-16265 WP Maps < 4.9.7 - Subscriber+ Denial of Service
CVE-2026-16258 Ajax Search Lite < 4.14.5 - Unauthenticated PHP Object Injection via Search Statistics RES

IV. Related Vulnerabilities

Same product: Simple CAPTCHA with Cloudflare Turnstile
Same vendor: Unknown

V. Comments for CVE-2026-15239

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