Known vulnerabilities in Simple CAPTCHA with Cloudflare Turnstile

Add Cloudflare Turnstile to WordPress, WooCommerce, Contact Forms & more. The user-friendly, privacy-preserving reCAPTCHA alternative. 100% free!

2Reported vulnerabilities

5.4Highest CVSS score

1.42.1Latest version

200,000+Active installs

What to do now

Update Simple CAPTCHA with Cloudflare Turnstile to 1.38.1 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 27, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2023-5135	Medium 5.4	0.6%	Before 1.23.2	`1.23.2`	September 27, 2023
CVE-2026-40799	Medium 5.3	0.3%	1.38.0 and earlier	`1.38.1`	May 8, 2026

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.