What the vulnerability does
01Description
The User Access Manager plugin for WordPress is vulnerable to Second-Order SQL Injection via the 'id' parameter of the wp_ajax_save-attachment-compat AJAX action in versions up to, and including, 2.3.12. This is due to insufficient validation on the objectId value stored in the saveAjaxAttachmentData() function and subsequent unparameterized concatenation in the addQueryExcludedPostFilter() function — the stored value is later retrieved from the database and used as an array key, then directly imploded into a SQL NOT IN() clause without integer casting or prepared statements. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Explanation of Vulnerability in Simple Terms
02Summary
User Access Manager versions 2.3.12 and earlier contain a SQL injection vulnerability in database queries. An attacker with low-level user access can craft malicious input to read sensitive data from the site's database, including user credentials and configuration details. No code execution or data modification is possible through this flaw.
What an attacker can do
03Attacker Capabilities
Read sensitive data from the site database, including user information and configuration.
Potential impact on your site
04Site Impact
User credentials and other database records may be exposed to authenticated attackers.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site.
Key dates
06Disclosure timeline
August 5, 2026
CVE published
August 5, 2026
Record updated
