Remote Privilege Escalation in SourceCodester College Notes Gallery Management System
CVE-2026-90856

6.9MEDIUM

Key Information:

Vendor

Sourcecodester
Status
College Notes Gallery Management System
Vendor
CVE Published:
15 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90856?

A security vulnerability has been identified in the College Notes Gallery Management System, specifically in the signup.php file within the Registration Flow component. This vulnerability allows for improper privilege management due to manipulation of the 'role' argument. Attackers can exploit this vulnerability remotely, leading to unauthorized access or privilege escalation. The flaw has been publicly disclosed, making it imperative for users and administrators to take immediate action to mitigate potential risks.

Affected Version(s)

College Notes Gallery Management 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-2026-90856 - Proof of Concept

References

https://vuldb.com/vuln/403413
vdb-entrytechnical-description
https://vuldb.com/vuln/403413/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90856
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Andyqaq (VulDB User)
.