blendmedia WP CTA Plugin up to 2.2.2 on WordPress ajaxCheck fildname sql injection

Summaryinfo

A vulnerability categorized as critical has been discovered in blendmedia WP CTA Plugin up to 2.2.2. This affects the function ajaxCheck. Executing a manipulation of the argument fildname can lead to sql injection. This vulnerability is registered as CVE-2026-4661. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in blendmedia WP CTA Plugin up to 2.2.2 and classified as critical. This vulnerability affects the function ajaxCheck. The manipulation of the argument fildname with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at wordfence.com. This vulnerability was named CVE-2026-4661 since 03/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/11/2026). This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• blendmedia

Name

• WP CTA Plugin

Version

• 2.2.0
• 2.2.1
• 2.2.2

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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