---
id: CVE-2026-13527
title: >-
  A vulnerability has been found in SourceCodester Class and Exam Timetabling
  System 1.0
summary: >-
  A vulnerability has been found in SourceCodester Class and Exam Timetabling
  System 1.0. The affected element is an unknown function of the file
  /preview4.php. Such manipulation of the argument course_year_section leads to
  sql injection. …
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-74
  - CWE-89
published: '2026-06-29'
updated: '2026-06-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13527'
references:
  - url: 'https://github.com/yuanyuandechen/vul/issues/1'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-13527'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/840551'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/374535'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/374535/cti'
    label: cna@vuldb.com
  - url: 'https://www.sourcecodester.com/'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-06-29T13:42:12.339Z'
epss: 0.00431
epssPercentile: 0.34664
---

## Overview

A vulnerability has been found in SourceCodester Class and Exam Timetabling System 1.0. The affected element is an unknown function of the file /preview4.php. Such manipulation of the argument course_year_section leads to sql injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.