CVE-2026-40799

Simple CAPTCHA Alternative with Cloudflare Turnstile <= 1.38.0 - Broken Authorization

mediumImproper Authorization

5.3

CVSS Score

5.3

CVSS Score

medium

Severity

1.38.1

Patched in

Time to patch

Description

The Simple CAPTCHA Alternative with Cloudflare Turnstile plugin for WordPress is vulnerable to broken authorization in all versions up to, and including, 1.38.0. This makes it possible for unauthenticated attackers to use one successful Turnstile submission for multiple checks

CVSS Vector Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

None

Confidentiality

Low

Integrity

None

Availability

Technical Details

Affected versions<=1.38.0

PublishedMay 8, 2026

Last updatedMay 11, 2026

Affected pluginsimple-cloudflare-turnstile

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/7e503e94-f544-4b77-9a79-e51836e30806?source=api-prod

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