CVE-2021-42663

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.

CVSS v3.1

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS

3.85% chance of exploitation in the next 30 days, 89th percentile

Nuclei

medium · CWE-79

Published

2021-11-05

Updated

2024-08-04

Proof-of-concept exploits (2)

• TheHackingRabbi/CVE-2021-426631★ · 2022-03-24
• 0xDeku/CVE-2021-426631★ · 2022-03-24

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-42663.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2021-42662
• CVE-2021-42664
• CVE-2021-42665
• CVE-2021-42666
• CVE-2021-42667
• CVE-2021-42668