SQL Injection in Sourcecodester Class And Exam Timetabling System
CVE-2026-13521
A vulnerability was identified in SourceCodester Class and Exam Timetabling System 1.0/5.php. Affected by this vulnerability is an unknown functionality of the file /preview5.php. Such manipulation of the argument course_year_section leads to sql injection. The attack may be performed from remote. The exploit is publicly available and might be used.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (34.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Sourcecodester Class And Exam Timetabling System — versions 1.0, 5.php
Weakness classification (CWE)
References
- vuldb.com/vuln/374529 (technical-description, vdb-entry)
- vuldb.com/vuln/374529/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-13521 (third-party-advisory)
- vuldb.com/submit/839572 (third-party-advisory)
- github.com/xiaoxuxu233/myCVE/issues/2 (issue-tracking, exploit)
- www.sourcecodester.com/ (product)
Frequently asked questions
- What is CVE-2026-13521?
- CVE-2026-13521 is a high-severity vulnerability in Sourcecodester Class And Exam Timetabling System, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-06-29.
- How severe is CVE-2026-13521?
- High severity. CVSS v3 base score is 7.3 out of 10.