CVE-2026-91010: Unknown Invisible Anti-Spam & Captcha — Recaptcha Alternative For All Forms

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms WordPress plugin before 5.1.1 does not check the user's capabilities in its message deletion AJAX action, and only tests that a nonce parameter is present rather than validating it, allowing any authenticated user, such as a subscriber, to permanently delete every form submission the Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms WordPress plugin before 5.1.1 has stored.

Affected products

• Unknown Invisible Anti-Spam & Captcha — Recaptcha Alternative For All Forms: from 2.0.5, before 5.1.1 (fixed in 5.1.1)

Published 2026-09-17. Last modified 2026-09-18.