Medium severity4.3NVD Advisory· Published Nov 5, 2021· Updated Jun 17, 2026
CVE-2021-42663
CVE-2021-42663
Description
An HTML injection vulnerability exists in Sourcecodester Online Event Booking and Reservation System in PHP/MySQL via the msg parameter to /event-management/index.php. An attacker can leverage this vulnerability in order to change the visibility of the website. Once the target user clicks on a given link he will display the content of the HTML code of the attacker's choice.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Sourcecodester/Online Event Booking and Reservation Systemdescription
- cpe:2.3:a:online_event_booking_and_reservation_system_project:online_event_booking_and_reservation_system:2.3.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
1- www.sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.htmlnvdProductThird Party Advisory
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