RCE in Sourcecodester Online Quiz System
CVE-2026-4973
A vulnerability was detected in SourceCodester Online Quiz System up to 1.0. Affected by this vulnerability is an unknown functionality of the file endpoint/add-question.php. Performing a manipulation of the argument quiz_question results in cross site scripting. It is possible to initiate the attack remotely. The exploit is now public and may be used.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (15.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Sourcecodester Online Quiz System — versions 1.0
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (exploit)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-4973?
- CVE-2026-4973 is a low-severity vulnerability in Sourcecodester Online Quiz System, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-03-27.
- How severe is CVE-2026-4973?
- Low severity. CVSS v3 base score is 3.5 out of 10.