What the vulnerability does
01Description
The MailArchiver plugin for WordPress is vulnerable to SQL Injection via the ‘logid’ parameter in all versions up to, and including, 4.5.0 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
MailArchiver versions 4.5.0 and earlier contain a SQL injection vulnerability in a high-privilege function. An authenticated administrator can craft malicious input to read sensitive data from the database. The vulnerability requires admin-level access and does not allow data modification or system unavailability.
What an attacker can do
03Attacker Capabilities
Read sensitive data from the MailArchiver database by injecting SQL commands.
Potential impact on your site
04Site Impact
An admin account compromise could expose archived email data and other database contents.
Conditions required to exploit
05Prerequisites
Attacker must have administrator-level access to MailArchiver.
Key dates
06Disclosure timeline
February 27, 2026
CVE published
April 8, 2026
Record updated
