CVE-2021-4458
published 2025-07-12CVE-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…
PriorityP181critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
ITWVulnCheck KEV
Exploited in the wild
EPSS
0.35%
27.3th percentile
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
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| webnus | modern_events_calendar_lite | < 6.4.0 | 6.4.0 |
| webnus | modern_events_calendar_lite | <= 6.3.0 | — |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vulncheck5.9MEDIUM
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GHSA
GHSA-gcj4-979g-33cw: 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
ghsa_unreviewed·2025-07-12
CVE-2021-4458 [MEDIUM] CWE-89 GHSA-gcj4-979g-33cw: 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
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.
VulnCheck
webnus modern_events_calendar_lite Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
vulncheck·2021·CVSS 5.9
CVE-2021-4458 [MEDIUM] webnus modern_events_calendar_lite Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
webnus modern_events_calendar_lite Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
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: webnus modern_events_calendar_lite
Required Action: Apply remediations or mitigations per vendor in
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-07-12
Published
Exploited in the wild