CVE-2021-24943

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-89

Affected software

No affected versions have been published.

Timeline

Published
Dec 6, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-249444.8The Custom Dashboard & Login Page WordPress plugin before 7.0 does not sanitise some of its settings, allowing high privilege users to perfoCVE-2021-249458.0The Like Button Rating ♥ LikeBtn WordPress plugin before 2.6.38 does not have any authorisation and CSRF checks in the likebtn_export_votes CVE-2021-249469.8The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the time parameter before using it in a SQL stateCVE-2021-249476.5The RVM WordPress plugin before 6.4.2 does not have proper authorisation, CSRF checks and validation of the rvm_upload_regions_file_path parCVE-2021-249487.5The Plus Addons for Elementor - Pro WordPress plugin before 5.0.7 does not validate the qvquery parameter of the tp_get_dl_post_info_ajax AJCVE-2021-249499.8The "WP Search Filters" widget of The Plus Addons for Elementor - Pro WordPress plugin before 5.0.7 does not sanitise and escape the option CVE-2021-249505.4The Insight Core WordPress plugin through 1.0 does not have any authorisation and CSRF checks in the insight_customizer_options_import (avaiCVE-2021-249519.8The LearnPress WordPress plugin before 4.1.4 does not sanitise, validate and escape the id parameter before using it in SQL statements when CVE-2021-249528.8The Conversios.io WordPress plugin before 4.6.2 does not sanitise, validate and escape the sync_progressive_data parameter for the tvcajax_pCVE-2021-249536.1The Advanced iFrame WordPress plugin before 2022 does not sanitise and escape the ai_config_id parameter before outputting it back in an admCVE-2021-249546.1The User Registration, Login Form, User Profile & Membership WordPress plugin before 3.2.3 does not sanitise and escape the ppress_cc_data pCVE-2021-249556.1The User Registration, Login Form, User Profile & Membership WordPress plugin before 3.2.3 does not escape the data parameter of the pp_get_
CVE-2021-24943: Critical severity, CVSS 9.8 | Vulnix