RCE in Sourcecodester Class And Exam Timetabling System
CVE-2026-78054
A weakness has been identified in SourceCodester Class and Exam Timetabling System 1.0. Affected is an unknown function of the file /BSIS1.php. Executing a manipulation of the argument course can lead to cross site scripting. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Sourcecodester Class And Exam Timetabling System — versions 1.0
Weakness classification (CWE)
References
- vuldb.com/vuln/394295 (technical-description, vdb-entry)
- vuldb.com/vuln/394295/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-78054 (third-party-advisory)
- vuldb.com/submit/881417 (third-party-advisory)
- github.com/i-QvQ-i/first-OvO/issues/10 (issue-tracking, exploit)
- www.sourcecodester.com/ (product)
Frequently asked questions
- What is CVE-2026-78054?
- CVE-2026-78054 is a medium-severity vulnerability in Sourcecodester Class And Exam Timetabling System, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-08-23.
- How severe is CVE-2026-78054?
- Medium severity. CVSS v3 base score is 4.3 out of 10.