SQL Injection Vulnerability in Modern Events Calendar Lite Plugin for WordPress
CVE-2021-4458

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Modern Events Calendar Lite
Vendor
CVE Published:
12 July 2025

What is CVE-2021-4458?

The Modern Events Calendar Lite plugin for WordPress contains a SQL Injection vulnerability that can be exploited through the 'id' parameter within the 'wp_ajax_mec_load_single_page' AJAX action. This issue arises due to inadequate escaping of user-supplied input and a lack of preparation within the SQL query itself. Attackers, particularly those who can disable addslashes on the server, could potentially manipulate existing queries, allowing them to extract sensitive information from the database.

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Affected Version(s)

Modern Events Calendar Lite * <= 6.3.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/2683727/mode...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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