CVE-2026-66674

WordPress Simple Cloudflare Turnstile plugin <= 1.42.1 - Captcha Bypass vulnerability

5.6 Medium

CVE-2026-66674 is a medium vulnerability (CVSS 5.6) in Elliot Sowers/ Relywp Simple Cloudflare Turnstile, published September 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. No source names a fixed version.

What does this mean?

Severity: 5.6 MediumCVSS 3.1, CVE List
Exploit chance: 0.25%EPSS, 16th percentile
Exploitation: None knownNot on CISA’s or ENISA’s lists
Fixed in: No fix listedNo source names one

Description

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.25%Unchanged since Sep 11, 2026

Affected products

What each source reports

CVE List Score used5.6

WordPress Simple Cloudflare Turnstile plugin <= 1.42.1 - Captcha Bypass vulnerability

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

Record: CVE-2026-66674
CVSS 3.1: 5.6 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness: CWE-290
Updated: 2026-11-02

EUVDEUVD-2026-755125.6

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

Record: EUVD-2026-75512
CVSS 3.1: 5.6 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-gw5r-wx4w-pfrp5.6

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

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

Record: GHSA-gw5r-wx4w-pfrp
CVSS 3.1: 5.6 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness: CWE-290
Updated: 2026-11-02

NVD5.6

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

Record: CVE-2026-66674
CVSS 3.1: 5.6 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness: CWE-290
Updated: 2026-11-02

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

Description

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

Affected products

What each source reports

History

References