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.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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0xDeku/CVE-2021-42663 ★ 1 · Nov 3, 2021
CVE-2021-42663 - HTML Injection vulnerability in the Online event booking and reservation system.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Sourcecodester Online Event Booking and Reservation System 2.3.0 - Cross-Site Scripting http/cves/2021/CVE-2021-42663.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.