EUVD-2026-75512
GHSA-gw5r-wx4w-pfrp
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Network-accessible bypass with complexity (AC:H); no auth or interaction needed; integrity and minor confidentiality impacted but no meaningful availability loss from CAPTCHA bypass.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated Bypass Vulnerability in Simple Cloudflare Turnstile <= 1.42.1 versions.
AnalysisAI
CAPTCHA verification bypass in the Simple Cloudflare Turnstile WordPress plugin (versions ≤ 1.42.1) allows unauthenticated network attackers to spoof successful challenge completion and circumvent bot-protection controls on any WordPress form protected by this plugin. The root cause is classified as CWE-290 (Authentication Bypass by Spoofing), meaning the plugin fails to adequately verify the integrity or authenticity of the Turnstile challenge response before granting form access. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The plugin must be installed and active on a WordPress site, and at least one form (login, registration, contact, or comment) must be configured to require Turnstile CAPTCHA verification. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 5.6 (Medium) with AC:H reflects meaningful exploitation complexity - the bypass is not a simple parameter omission but requires some level of adversarial technique. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the Simple Cloudflare Turnstile plugin to a version above 1.42.1 via the WordPress plugin dashboard or the WordPress.org repository; the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/simple-cloudflare-turnstile/vulnerability/wordpress-simple-cloudflare-turnstile-plugin-1-42-1-captcha-bypass-vulnerability should be consulted for the specific patched release version, which is not independently confirmed in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-290 – Authentication Bypass by Spoofing
View allSame technique Authentication Bypass
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External POC / Exploit Code
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