---
id: CVE-2026-66674
title: >-
  Unauthenticated Bypass Vulnerability in Simple Cloudflare Turnstile <= 1.42.1
  versions.
summary: >-
  Unauthenticated Bypass Vulnerability in Simple Cloudflare Turnstile <= 1.42.1
  versions.
severity: medium
cvss: 5.6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-290
vendor: Elliot Sowers/ RelyWP
product: simple-cloudflare-turnstile
affected:
  - simple-cloudflare-turnstile >= n/a <= 1.42.1
published: '2026-09-10'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T21:17:28.483'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66674'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/simple-cloudflare-turnstile/vulnerability/wordpress-simple-cloudflare-turnstile-plugin-1-42-1-captcha-bypass-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T20:36:26.830451Z'
ingestedAt: '2026-09-12T12:24:22.529Z'
epss: 0.00252
epssPercentile: 0.14826
---

## Overview

Unauthenticated Bypass Vulnerability in Simple Cloudflare Turnstile <= 1.42.1 versions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.