### [CVE-2021-24943](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24943)
![](https://img.shields.io/static/v1?label=Product&message=Registrations%20for%20the%20Events%20Calendar%20%E2%80%93%20Event%20Registration%20Plugin&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=2.7.6%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-89%20SQL%20Injection&color=brightgreen)

### 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.

### POC

#### Reference
- https://wpscan.com/vulnerability/ba50c590-42ee-4523-8aa0-87ac644b77ed

#### Github
- https://github.com/20142995/nuclei-templates