HTML Injection Vulnerability in Sourcecodester Online Event Booking System
CVE-2021-42663

4.3MEDIUM

Key Information:

Vendor

Online Event Booking And Reservation System Project

Status
Online Event Booking And Reservation System
Vendor
CVE Published:
5 November 2021

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 37%

What is CVE-2021-42663?

An HTML injection vulnerability has been identified in the Sourcecodester Online Event Booking and Reservation System, specifically affecting the msg parameter in the /event-management/index.php file. By exploiting this flaw, an attacker can alter the website’s visibility and inject arbitrary HTML content. This manipulation can mislead users, as their clicks on malicious links can result in the unexpected display of harmful or deceptive content, thereby impacting user experience and security.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-42663
Created by 0xDeku

References

https://www.sourcecodester.com/php/14241/online-event-boo...
x_refsource_MISC
https://github.com/TheHackingRabbi/CVE-2021-42663
x_refsource_MISC

EPSS Score

37% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

JSON
.