Vulnerability Monitor

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CVE-2021-4458

The Modern Events Calendar Lite plugin for WordPress is vulnerable to SQL Injection via the 'id' parameter of the 'wp_ajax_mec_load_single_page' 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.

Published

2025-07-12T12:15:25.733

Last Modified

2025-07-29T23:35:00.040

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

Weaknesses

Type: Primary
CWE-89

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	webnus	modern_events_calendar_lite	< 6.4.0	Yes

References

https://plugins.trac.wordpress.org/changeset/2683727/modern-events-calendar-lite/trunk/app/libraries/render.php Patch ([email protected])
https://www.wordfence.com/threat-intel/vulnerabilities/id/703ba736-5834-40f2-9cf6-a6a70a73e4d6?source=cve Third Party Advisory ([email protected])