CVE-2026-15462: Sticky Chat Widget <= 1.4.2 - Unauthenticated SQL Injection
The Sticky Chat Widget plugin for WordPress is vulnerable to SQL Injection via the 'scwformfields' parameter array keys of the 'scwsaveformdata' AJAX action in versions up to, and including, 1.4.2. This is due to the saveformdata() function passing attacker-controlled POST array keys unsanitized to $wpdb->insert(), which wraps column identifiers in backticks without escaping them, allowing a backtick in an attacker-supplied key to break out of the column-identifier list into raw SQL; additionally, the use of filterinput() bypasses WordPress's wpmagicquotes() protection, and the widgetid validation loop is skipped entirely when no valid widgetid is supplied, leaving $isValid at 1. This makes it possible for unauthenticated attackers 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
Who can exploit this issue?
An unauthenticated remote attacker can exploit it. No WordPress account or other privileges are required, and the vulnerable AJAX action accepts attacker-controlled POST data.
What conditions are required for exploitation?
The affected plugin must be installed at version 1.4.2 or earlier. An attacker can submit crafted scw_form_fields array keys to the scw_save_form_data AJAX action; supplying no valid widget_id causes the widget validation loop to be skipped.
What is the likely impact if exploitation succeeds?
An attacker can append additional SQL queries to the plugin's database operation and use them to extract sensitive information from the WordPress database. The provided severity vector indicates high confidentiality impact, with no stated integrity or availability impact.