An HTML injection vulnerability exists in Sourcecodester Online Event Booking and…
Priority LOW 27CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
EPSS 0.03852 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:online_event_booking_and_reservation_system_project:online_event_booking_and_reservation_system:2.3.0:*:*:*:*:*:*:* | 2.3.0 | Vulnerable | Online Event Booking And Reservation System Project |
- cpe:2.3:a:online_event_booking_and_reservation_system_project:online_event_booking_and_reservation_system:2.3.0:*:*:*:*:*:*:* Versions 2.3.0 Vulnerable ·Online Event Booking And Reservation System Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-42663
- 2026-10-03 Alias added: GHSA-948r-pr54-gh74
- 2026-10-16 EPSS moved to the 90th–95th percentile
References
More Online Event Booking And Reservation System Project Online Event Booking And Reservation System vulnerabilities
- TI-2021-18895 A SQL Injection vulnerability exists in Sourcecodester Online Event Booking and… CVSS 3.1CRITICAL 9.8
- TI-2021-18890 A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Event… CVSS 3.1MEDIUM 5.4
Sources
- CVE-2021-42663 · CVE Program
- CVE-2021-42663 · NVD
- FIRST EPSS
- GHSA-948r-pr54-gh74 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences