CVE-2021-42663

MEDIUM NUCLEI

Online Event Booking And Reservation System - XSS

Title source: rule

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.

Exploits (2)

nomisec WRITEUP 1 stars

by 0xDeku · poc

https://github.com/0xDeku/CVE-2021-42663

View Code ZIP pw:eip

inthewild WRITEUP

poc

https://github.com/thehackingrabbi/cve-2021-42663

View Code ZIP pw:eip

Nuclei Templates (1)

Sourcecodester Online Event Booking and Reservation System 2.3.0 - Cross-Site Scripting

MEDIUMVERIFIEDby fxploit

References (2)

[Exploit, Third Party Advisory] https://github.com/TheHackingRabbi/CVE-2021-42663

[Product, Third Party Advisory] https://www.sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.html

Scores

CVSS v3 4.3

EPSS 0.3798

EPSS Percentile 97.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Details

CWE

CWE-79

Status published

Products (1)

online_event_booking_and_reservation_system_project/online_event_booking_and_reservation_system 2.3.0

Published Nov 05, 2021

Tracked Since Feb 18, 2026