CVE-2021-42662
A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event Booking...
A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event Booking and Reservation System in PHP/MySQL via the Holiday reason parameter. An attacker can leverage this vulnerability in order to run javascript commands on the web server surfers behalf, which can lead to cookie stealing and more.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event Booking and Reservation System in PHP/MySQL via the Holiday reason parameter. An attacker can leverage this vulnerability in order to run javascript commands on the web server surfers behalf, which can lead to cookie stealing and more.
- Record
CVE-2021-42662- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE ListNo score
A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event Booking and Reservation System in PHP/MySQL via the Holiday reason parameter. An attacker can leverage this vulnerability in order to run javascript commands on the web server surfers behalf, which can lead to cookie stealing and more.
- Record
CVE-2021-42662- Updated
- 2026-11-02
EUVDEUVD-2021-29623No score
A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event Booking and Reservation System in PHP/MySQL via the Holiday reason parameter. An attacker can leverage this vulnerability in order to run javascript commands on the web server surfers behalf, which can lead to cookie stealing and more.
- Record
EUVD-2021-29623- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jw7x-fqhx-7gcfNo score
A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event Booking...
A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event Booking and Reservation System in PHP/MySQL via the Holiday reason parameter. An attacker can leverage this vulnerability in order to run javascript commands on the web server surfers behalf, which can lead to cookie stealing and more.
- Record
GHSA-jw7x-fqhx-7gcf- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | 0xDeku/CVE-2021-42662 | 2021-11-03 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42662 is a medium vulnerability (CVSS 5.4) in Online Event Booking And Reservation System Project Event Booking And Reservation System, published November 5, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.67%, the 77th percentile. No source names a fixed version.
References
sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.html
packetstormsecurity.com/files/164615/Online-Event-Booking-And-Reservation-System-1.0-Cross-Site-Scripting.html
github.com/TheHackingRabbi/CVE-2021-42662
exploit-db.com/exploits/50450
nvd.nist.gov/vuln/detail/CVE-2021-42662