Modern Events Calendar Lite and Pro SQL Injection

Executive Summary

This is a SQL injection vulnerability in the Modern Events Calendar Lite and Pro WordPress plugins before version 7.37.0. It allows authenticated users with Subscriber-level access or higher to inject malicious SQL queries through the mec_attendees AJAX action. The plugins fail to properly sanitize and escape user input before using it in SQL statements, enabling attackers to manipulate queries and extract sensitive data from the database.

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Detection Guidance

Check if the Modern Events Calendar Lite or Pro plugin versions are below 7.37.0. Look for suspicious SQL query patterns in logs or database activity, particularly involving the mec_attendees AJAX action. Monitor for unauthorized data extraction attempts.

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Impact Analysis

An attacker with Subscriber-level access could exploit this to extract sensitive data from your WordPress database, such as user credentials, personal information, or other confidential data. This could lead to data breaches, unauthorized access, or further compromise of your WordPress site.

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Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations could face legal penalties, fines, or reputational damage if sensitive data is exposed due to this flaw.

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Mitigation Strategies

Immediately update both Modern Events Calendar Lite and Pro plugins to version 7.37.0 or later. Remove or restrict Subscriber-level access to untrusted users until the update is applied. Review database access logs for signs of exploitation.

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