Cross Site Scripting Vulnerability in Cyber-III Student-Management-System
CVE-2026-5643

4.8MEDIUM

Key Information:

Vendor

Cyber-iii

Status
Student-management-system
Vendor
CVE Published:
6 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5643?

A cross site scripting vulnerability exists in the Cyber-III Student-Management-System, specifically within the Admin Add Endpoint. This issue arises due to manipulation of the $_SERVER['PHP_SELF'] argument in the notice.php file, allowing attackers to execute malicious scripts remotely. As the exploit is publicly available, systems running affected versions are at risk. The project has yet to respond to reports regarding this critical issue, and due to its rolling release update strategy, specific version details for mitigation are not provided.

Affected Version(s)

Student-Management-System 1a938fa61e9f735078e9b291d2e6215b4942af3f

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-2026-5643 - Proof of Concept

References

https://vuldb.com/vuln/355431
vdb-entrytechnical-description
https://vuldb.com/vuln/355431/cti
signaturepermissions-required
https://vuldb.com/submit/785859
third-party-advisory

CVSS V4

Score:
4.8
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

springbot (VulDB User)
VulDB CNA Team
.