Cross-Site Scripting Flaw in SourceCodester Class and Exam Timetabling System
CVE-2026-15595

5.3MEDIUM

Key Information:

Vendor: Sourcecodester
Status: Class And Exam Timetabling System
Vendor: CVE Published:; 13 July 2026

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👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15595?

A cross-site scripting vulnerability has been identified in the SourceCodester Class and Exam Timetabling System version 1.0. This security issue arises from inadequate input validation in the '/forsubject.php' file, allowing attackers to manipulate the 'subject' argument. A successful exploit enables remote attackers to execute arbitrary scripts in the context of the user's session, posing a significant risk to users' data security. As this vulnerability has been publicly disclosed, immediate attention to patching and securing the application is crucial to prevent potential exploitation.

Affected Version(s)

Class and Exam Timetabling System 1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-15595 - Proof of Concept