CVE-2021-24943 Registrations for the Events Calendar < 2.7.6 - Unauthenticated SQL Injection
Unauthenticated attackers can inject SQL via the event_id parameter in the rtec_send_unregister_link AJAX action, allowing unauthorized database access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-24943?
CVE-2021-24943 is a critical SQL injection vulnerability in Unknown Registrations for the Events Calendar – Event Registration Plugin, published on 6 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-89
Which versions are affected by CVE-2021-24943?
It affects 1 product.
Products include Roundupwp Registrations for the Events Calendar.
How do I fix CVE-2021-24943?
No fix has been published for CVE-2021-24943 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2021-24943 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24943 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in Unknown Registrations for the Events Calendar – Event Registration Plugin
- CVE-2024-7982 Registrations for The Events Calendar < 2.12.4 - Unauthenticated Stored XSS
- CVE-2024-39638 WordPress Registrations for the Events Calendar plugin <= 2.12.2 - SQL Injection vulnerability
- CVE-2024-10703 Registrations for The Events Calendar < 2.13.4 - Admin+ Stored XSS
- CVE-2021-25083 Registrations for the Events Calendar < 2.7.10 - Reflected Cross-Site Scripting
- CVE-2021-24876 Registrations for The Events Calendar < 2.7.5 - Reflected Cross-Site Scripting
Sources
Also known as GHSA-756m-jgjv-8g68.