What the vulnerability does
01Description
The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to SQL Injection via the 'workflow_ids' parameter in all versions up to, and including, 5.9.16 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 administrator-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
The Email Subscribers & Newsletters plugin for WordPress versions 5.9.16 and earlier contains a SQL injection vulnerability in database queries. An authenticated administrator can craft malicious input to execute arbitrary SQL commands, potentially reading or modifying sensitive data in the WordPress database. This requires administrator-level access to exploit.
What an attacker can do
03Attacker Capabilities
Read or modify data in the WordPress database via SQL injection.
Potential impact on your site
04Site Impact
An admin account compromise could expose subscriber data, email content, or other database records.
Conditions required to exploit
05Prerequisites
Attacker must have administrator privileges on the WordPress site.
Key dates
06Disclosure timeline
March 4, 2026
CVE published
April 8, 2026
Record updated
