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
Published Nov 5, 2021
4.3
MEDIUMCVSS 3.1
EPSS 3.85%
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 products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.85% (0.03852) | 89.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.79% (0.03792) | 88.56th | v5 (v2026.06.15) |
| Mar 30, 2025 | 37.98% (0.37983) | 96.91th | v4 (v2025.03.14) |
| Mar 29, 2025 | 47.99% (0.47986) | 96.67th | v4 (v2025.03.14) |
| Mar 28, 2025 | 37.98% (0.37983) | 96.90th | v4 (v2025.03.14) |
| Mar 27, 2025 | 49.29% (0.49290) | 97.40th | v4 (v2025.03.14) |
| Mar 24, 2025 | 37.98% (0.37983) | 96.88th | v4 (v2025.03.14) |
| Mar 23, 2025 | 49.29% (0.49290) | 97.45th | v4 (v2025.03.14) |
| Mar 20, 2025 | 37.98% (0.37983) | 96.93th | v4 (v2025.03.14) |
| Mar 19, 2025 | 49.29% (0.49290) | 97.45th | v4 (v2025.03.14) |
| Mar 18, 2025 | 37.98% (0.37983) | 96.89th | v4 (v2025.03.14) |
| Mar 17, 2025 | 49.29% (0.49290) | 97.51th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00183) | 56.90th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.12% (0.00121) | 46.64th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.12% (0.00116) | 44.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00130) | 46.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.98% (0.04983) | 89.53th | v2 (v2022.01.01) |
| Sep 6, 2022 | 4.98% (0.04983) | 89.00th | v2 (v2022.01.01) |
| Sep 5, 2022 | 2.56% (0.02561) | 81.19th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.56% (0.02561) | 61.74th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.91% (0.02909) | 64.88th | v5 (v2026.06.15) |
| Nov 6, 2021 | 2.91% (0.02909) | 81.26th | v1 |
References (2)
- https://github.com/TheHackingRabbi/CVE-2021-42663 x_refsource_MISCExploitThird Party Advisory
- https://www.sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.html x_refsource_MISCProductThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/TheHackingRabbi/CVE-2021-42663 | x_refsource_MISCExploitThird Party Advisory | |
| https://www.sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.html | x_refsource_MISCProductThird Party Advisory |
Change history (0)
No recorded changes yet.