CVE-2026-5813 | PHPGurukul Online Course Registration 3.1 /check_availability.php cid sql injection

A vulnerability, which was classified as critical, was found in PHPGurukul Online Course Registration 3.1. This vulnerability affects unknown code of the file /check_availability.php. Executing a manipulation of the argument cid can lead to sql injection.

This vulnerability is registered as CVE-2026-5813. It is possible to launch the attack remotely. Furthermore, an exploit is available.