CVE-2021-4458

Summary

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 Software

Weaknesses

• CWE-89: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/703ba736-5834-40f2-9cf6-a6a70a73e4d6?source=cve
• https://plugins.trac.wordpress.org/changeset/2683727/modern-events-calendar-lite/trunk/app/libraries/render.php

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