Authorization Flaw in PHPGurukul User Registration & Login System
CVE-2026-105703

5.1MEDIUM

Key Information:

Vendor

PHPgurukul
Status
User Registration & Login And User Management System
Vendor
CVE Published:
6 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-105703?

A vulnerability was identified in the PHPGurukul User Registration & Login and User Management System version 3.3, specifically within the Change Password Handler located in loginsystem/admin/change-password.php. The flaw arises from the improper handling of the currentpassword argument, leading to incorrect authorization processes. This vulnerability allows for the potential remote exploitation of the affected system, posing significant security risks. Users are advised to update their installations and review their security measures to prevent unauthorized access.

Affected Version(s)

User Registration & Login and User Management System 3.3

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-2026-105703 - Proof of Concept

References

https://vuldb.com/vuln/413696
vdb-entrytechnical-description
https://vuldb.com/vuln/413696/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-105703
third-party-advisory

CVSS V4

Score:
5.1
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

CyberShailendra (VulDB User)
.