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CVE-2021-42663

MEDIUM
4.3
CVSS Score
Published: November 5, 2021 at 12:17 PM UTC
Updated: June 17, 2026 at 04:09 AM UTC
1 product affected across 1 vendorOnline Event Booking and Reservation System

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Severity
MEDIUM4.3
Exploit prediction
EPSS 4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/TheHackingRabbi/CVE-2021-42663
x_refsource_MISCProductThird Party Advisory
Source: [email protected]
https://www.sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.html

CVSS

4.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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