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Case File

CVE-2021-42663

MEDIUM · CVSS 4.3 EPSS 3.79% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-05 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.3. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-42663
Severity
MEDIUM
CVSS
4.3
EPSS
3.79%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)