CVE-2026-15239 — MEDIUM (5.3)

Vulnerability Description

The Simple CAPTCHA with Cloudflare Turnstile WordPress plugin before 1.42.0 does not bind its Turnstile validation cache to the single-use challenge token in its Forminator integration, instead keying it to an attacker-controlled, reusable request value, allowing unauthenticated attackers to solve one challenge and then replay token-less form submissions for a short window, defeating the anti-abuse protection the plugin provides.

CVSS Score

5.3

MEDIUM

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

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-345

References

https://wpscan.com/vulnerability/28d3bda2-501c-4eeb-9184-c343367adbea/

FAQ

What is CVE-2026-15239?

CVE-2026-15239 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The Simple CAPTCHA with Cloudflare Turnstile WordPress plugin before 1.42.0 does not bind its Turnstile validation cache to the single-use challenge token in its Forminator integration, instead keying...

How severe is CVE-2026-15239?

CVE-2026-15239 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-15239?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.