{"id":"CVE-2021-24943","aliases":["EUVD-2021-11855","GHSA-756m-jgjv-8g68"],"status":"published","title":"Registrations for the Events Calendar \u003c 2.7.6 - Unauthenticated SQL Injection","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.07303,"percentile":0.94423,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-89"],"published":"2021-12-06T15:55:39Z","modified":"2026-06-17T03:41:10Z","exploits":[{"source":"nuclei","id":"CVE-2021-24943","title":"Registrations for the Events Calendar \u003c 2.7.6 - SQL Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24943.yaml"}],"products":[{"vendor":"roundupwp","product":"registrations_for_the_events_calendar"},{"vendor":"unknown","product":"registrations for the events calendar – event registration plugin"}],"references":[{"url":"https://wpscan.com/vulnerability/ba50c590-42ee-4523-8aa0-87ac644b77ed","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24943"},{"url":"https://github.com/advisories/GHSA-756m-jgjv-8g68"}],"sources":{"cve":[{"id":"CVE-2021-24943","title":"Registrations for the Events Calendar \u003c 2.7.6 - Unauthenticated SQL Injection","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.","status":"published","published":"2021-12-06T15:55:39Z","modified":"2024-08-03T19:49:13.882Z","cwes":["CWE-89"],"updated_at":"2026-11-02T14:33:05.000797Z"}],"euvd":[{"id":"EUVD-2021-11855","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.","status":"published","published":"2021-12-06T15:55:39Z","modified":"2024-08-03T19:49:13Z","updated_at":"2026-11-03T03:24:55.415131Z"}],"ghsa":[{"id":"GHSA-756m-jgjv-8g68","title":"The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and...","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.","status":"published","published":"2021-12-07T00:00:28Z","modified":"2023-02-01T05:06:56Z","cwes":["CWE-89"],"updated_at":"2026-11-02T14:50:26.86128Z"}],"nvd":[{"id":"CVE-2021-24943","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.","status":"published","published":"2021-12-06T16:15:08.613Z","modified":"2026-06-17T03:41:10.393Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-89"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}