CVE-2021-4458: Modern Events Calendar Lite <= 6.3.0 - Unauthenticated SQL Injection
The Modern Events Calendar Lite plugin for WordPress is vulnerable to SQL Injection via the 'id' parameter of the 'wpajaxmecloadsinglepage' AJAX action in all versions up to, and including, 6.3.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This is only exploitable on sites with addslashes disabled.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-4458?
CVE-2021-4458 has been classified with a medium severity level due to its potential for arbitrary SQL injection.
How do I fix CVE-2021-4458?
To fix CVE-2021-4458, upgrade the Modern Events Calendar Lite plugin to version 6.4.0 or later.
What is the impact of CVE-2021-4458?
The impact of CVE-2021-4458 is that an attacker could exploit the SQL injection vulnerability to manipulate the database.
Who is affected by CVE-2021-4458?
Users of the Modern Events Calendar Lite plugin for WordPress up to version 6.3.0 are affected by CVE-2021-4458.
What versions of the plugin does CVE-2021-4458 affect?
CVE-2021-4458 affects all versions of the Modern Events Calendar Lite plugin up to and including version 6.3.0.