RCE in Sourcecodester Class And Exam Timetabling System
CVE-2026-16155
A vulnerability was identified in SourceCodester Class and Exam Timetabling System 1.0. Affected by this issue is some unknown functionality of the file /schoolyr.php. The manipulation of the argument sy leads to cross site scripting. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (27.7th 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 Class And Exam Timetabling 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 (third-party-advisory)
- cna@vuldb.com (issue-tracking, exploit)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-16155?
- CVE-2026-16155 is a low-severity vulnerability in Sourcecodester Class And Exam Timetabling System, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-07-18.
- How severe is CVE-2026-16155?
- Low severity. CVSS v3 base score is 3.5 out of 10.