Registrations for the Events Calendar <= 2.7.5 - Unauthenticated SQL Injection

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE CVE-2021-24943
CVSS Critical (9.8)
Publicly Published November 8, 2021
Last Updated January 22, 2024
Researcher Krzysztof Zając
Description

The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and escape the event_id in the rtec_send_unregister_link AJAX action (available to both unauthenticated and authenticated users) before using it in a SQL statement, leading to an unauthenticated SQL injection.

References

1 affected software package

Software Type Plugin
Software Slug registrations-for-the-events-calendar (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 2.7.6
Patched Version
  • 2.7.6
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