Vulnerability · Published Jul 12, 2025 · Assigned by Wordfence
CVE-2021-4458Modern Events Calendar Lite <= 6.3.0 - Unauthenticated SQL Injection
Medium 5.9
In plain English
A medium-severity SQL injection in Modern Events Calendar Lite from webnus/. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| webnus/ | Modern Events Calendar Lite | 0 – through 6.3.0 |
Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N