THREATPORT/VULNERABILITY/CVE-2021-42663
MEDIUM SEVERITY

CVE-2021-42663

Online Event Booking And Reservation System vulnerability

CVSS
4.3
EPSS
3.8%
EPSS pct
89th
Exploited
No known
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 vendor
Online Event Booking And Reservation System Project
Affected product
Online Event Booking And Reservation System
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness type (CWE)
  • CWE-79 — Cross-Site Scripting (XSS)
Published
2021-11-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality.

Its EPSS score of 3.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2021-42663

  • Confirm whether Online Event Booking And Reservation System Project Online Event Booking And Reservation System is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-42663.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-42663

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-42663 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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