Vulnerability Description
The WP CTA – Sticky CTA Builder, Generate Leads, Promote Sales plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'fildname' parameter in all versions up to, and including, 2.2.2. This is due to insufficient escaping of user-supplied column names in the ajaxCheck() method and lack of preparation in the $wpdb->update() call. The vulnerability is compounded by the complete absence of authorization checks and the endpoint being registered for unauthenticated users via wp_ajax_nopriv_. This makes it possible for unauthenticated attackers to inject arbitrary SQL queries and extract sensitive information from the database via time-based blind SQL injection techniques, including administrator password hashes.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/easy-sticky-sidebar/tags/1.7.4/inc/Cl
- https://plugins.trac.wordpress.org/browser/easy-sticky-sidebar/tags/1.7.4/inc/Cl
- https://plugins.trac.wordpress.org/browser/easy-sticky-sidebar/tags/1.7.4/inc/Cl
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3524743%40easy-sticky
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7e963601-dc41-4218-911
FAQ
What is CVE-2026-4661?
CVE-2026-4661 is a vulnerability with a CVSS score of 7.5 (HIGH). The WP CTA – Sticky CTA Builder, Generate Leads, Promote Sales plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'fildname' parameter in all versions up to, and including, 2...
How severe is CVE-2026-4661?
CVE-2026-4661 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-4661?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.