CVE-2026-16146
MediumCVSS 4.9Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
The Invisible Anti-Spam & CAPTCHA plugin for WordPress up to version 5.1 is vulnerable to SQL injection via JSON keys/values patterns. Insufficient escaping and lack of query preparation allow authenticated attackers with editor-level access to append additional SQL queries, potentially extracting sensitive information.
Risk Assessment
An attacker with editor privileges can access database data, including user data and passwords.
Recommendation
Update the Invisible Anti-Spam & CAPTCHA plugin to the latest patched version. Restrict editor-level access to trusted users only.
Other vulnerabilities in Invisible Anti-Spam & CAPTCHA
See all- CVE-2026-16145High
The Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'action' parameter in all versions up to, and including, 5.1. Unauthenticated attackers can inject arbitrary web scripts that execute when a user accesses an injected page.
- CVE-2026-16094Medium
The Invisible Anti-Spam & CAPTCHA plugin for WordPress up to version 5.1 is vulnerable to SQL injection via the 'key' parameter. Insufficient escaping and lack of query preparation allow authenticated attackers with editor-level access to append additional SQL queries, potentially extracting sensitive information.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS