Cross-Site Scripting Vulnerability in SourceCodester Timetabling System
CVE-2026-90615

5.3MEDIUM

Key Information:

Vendor

Sourcecodester
Status
Class And Exam Timetabling System
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90615?

A security vulnerability has been discovered in the SourceCodester Class and Exam Timetabling System, specifically within the file /subject1.php. This flaw allows an attacker to manipulate the input argument 'subject', leading to cross-site scripting (XSS). The attack can be executed remotely, which poses a significant risk to users if exploited. The vulnerability has been publicly disclosed, raising concerns regarding its 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-2026-90615 - Proof of Concept

References

https://vuldb.com/vuln/403197
vdb-entrytechnical-description
https://vuldb.com/vuln/403197/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90615
third-party-advisory

CVSS V4

Score:
5.3
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

ending (VulDB User)
.