Cross Site Scripting Vulnerability in SourceCodester Class and Exam Timetabling System
CVE-2026-16202

5.1MEDIUM

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16202?

A vulnerability has been identified in the SourceCodester Class and Exam Timetabling System 1.0, specifically in the /CYS.php file. This issue arises from the manipulation of the 'course' argument, enabling attackers to execute cross site scripting (XSS) attacks remotely. With the potential for exploitation publicly disclosed, this vulnerability poses significant risks to affected systems, as it may allow unauthorized scripts to be injected, leading to data compromise and manipulation of user sessions.

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-2026-16202 - Proof of Concept

References

https://vuldb.com/vuln/380018
vdb-entrytechnical-description
https://vuldb.com/vuln/380018/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-16202
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

AlbaDove (VulDB User)
.