Improper Authentication in PHPGurukul Blood Donor Management System by PHPGurukul
CVE-2026-90840

6.9MEDIUM

Key Information:

Vendor

PHPgurukul
Status
Blood Donor Management System
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90840?

A vulnerability exists in the PHPGurukul Blood Donor Management System version 1.0, specifically within the __construct function of the Dashboard.php file located in the Admin Controllers. This flaw allows for improper authentication, which can be exploited remotely by malicious actors. The exploit code is publicly available, raising concerns regarding the security of the affected application. Users are advised to apply necessary security measures promptly to mitigate potential risks.

Affected Version(s)

Blood Donor 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-2026-90840 - Proof of Concept

References

https://vuldb.com/vuln/403392
vdb-entrytechnical-description
https://vuldb.com/vuln/403392/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90840
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

n4k3r0 (VulDB User)
.