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CVE-2021-24943

CRITICAL 9.8 CVSS 3.1
Published
December 6, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-89
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Affected WordPress components

  • Registrations for the Events Calendar – Event Registration Plugin Plugin · registrations-for-the-events-calendar
    Confirmed match Active
    From 2.7.6 (including) to 2.7.6 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Registrations for the Events Calendar – Event Registration Plugin — From 2.7.6 (including) to 2.7.6 (excluding)
  • roundupwp registrations_for_the_events_calendar — Before 2.7.6

References

  • wpscan.com https://wpscan.com/vulnerability/ba50c590-42ee-4523-8aa0-87ac644b77ed Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record