CVE-2026-16146: Invisible Anti-Spam & CAPTCHA <= 5.1 - Authenticated (Editor+) SQL Injection via Pattern JSON Keys/Values
The Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to generic SQL Injection via Pattern JSON Keys/Values in all versions up to, and including, 5.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with editor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-16146?
The severity of CVE-2026-16146 is classified as medium with a score of 4.9.
How do I fix CVE-2026-16146?
To mitigate CVE-2026-16146, update the Invisible Anti-Spam & CAPTCHA plugin to version 5.2 or later.
What type of vulnerability is CVE-2026-16146?
CVE-2026-16146 is an SQL Injection vulnerability affecting the Invisible Anti-Spam & CAPTCHA plugin.
Which versions are affected by CVE-2026-16146?
CVE-2026-16146 affects all versions of the plugin up to and including 5.1.
What is the attack vector for CVE-2026-16146?
The attack vector for CVE-2026-16146 is authenticated access with Editor or higher privileges.