CVE-2025-70063: PHPGurukul HMS IDOR Auth Bypass Flaw

CVE-2025-70063 Overview

The 'Medical History' module in PHPGurukul Hospital Management System v4.0 contains an Insecure Direct Object Reference (IDOR) vulnerability. The application fails to verify that the requested viewid parameter belongs to the currently authenticated patient. This allows a user to access the confidential medical records of other patients by iterating the viewid integer. This vulnerability represents a significant privacy breach risk in healthcare environments where patient data protection is critical.

Critical Impact

Unauthorized access to confidential patient medical records through parameter manipulation, potentially exposing sensitive healthcare information.

Affected Products

• PHPGurukul Hospital Management System v4.0
• Medical History module with viewid parameter functionality

Discovery Timeline

• 2026-02-18 - CVE CVE-2025-70063 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2025-70063

Vulnerability Analysis

This Insecure Direct Object Reference (IDOR) vulnerability stems from a fundamental access control failure in the Medical History module. When authenticated patients request their medical records, the application uses a viewid parameter to identify which record to display. However, the application does not implement proper authorization checks to verify that the requesting user actually owns or has permission to access the requested record.

The vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key), which describes scenarios where an application uses user-controlled input as a key to access resources without verifying that the user has authorization to access those resources.

Root Cause

The root cause is the absence of server-side authorization validation when processing requests to view medical history records. The application trusts the client-supplied viewid parameter without verifying ownership or access rights. This allows any authenticated patient to access medical records belonging to other patients simply by modifying the viewid value in their request.

Attack Vector

An attacker with a valid patient account can exploit this vulnerability through simple parameter manipulation. The attack follows this pattern:

1. The attacker authenticates as a legitimate patient
2. The attacker navigates to their own medical history and observes the viewid parameter in the URL or request
3. By incrementing or decrementing the viewid integer value, the attacker can enumerate and access medical records belonging to other patients
4. No specialized tools are required—the attack can be performed using only a web browser

The network-based attack requires low complexity and only basic authenticated access. The vulnerability exposes high confidentiality impact as sensitive medical data can be disclosed without any integrity or availability effects.

Detection Methods for CVE-2025-70063

Indicators of Compromise

• Unusual patterns of sequential viewid parameter access from a single user session
• Rapid enumeration of medical record IDs that don't belong to the authenticated user
• Access logs showing patients viewing records with IDs far outside their expected range
• HTTP requests containing sequential or randomized viewid values in quick succession

Detection Strategies

• Implement logging to track viewid parameter values against authenticated user IDs
• Deploy web application firewall (WAF) rules to detect sequential parameter enumeration patterns
• Configure intrusion detection systems to alert on rapid API requests with varying object identifiers
• Monitor for anomalous access patterns in medical record retrieval endpoints

Monitoring Recommendations

• Enable detailed access logging for the Medical History module
• Set up alerts for users accessing records outside their authorized scope
• Implement session-based anomaly detection to identify enumeration attempts
• Review access logs regularly for patterns indicative of IDOR exploitation

How to Mitigate CVE-2025-70063

Immediate Actions Required

• Disable public access to the Medical History module until a fix is applied
• Implement emergency access control checks at the application layer
• Review access logs to identify potential unauthorized data access
• Notify affected patients if evidence of exploitation is discovered

Patch Information

No official vendor patch has been released at this time. Organizations should monitor the GitHub Gist Security Summary and Packet Storm File Analysis for updates on remediation guidance. Contact PHPGurukul directly for vendor support and patch availability.

Workarounds

• Implement server-side authorization checks to verify record ownership before displaying medical data
• Add session-based validation to ensure viewid values match the authenticated patient's records
• Consider using non-sequential, cryptographically random identifiers instead of predictable integer IDs
• Deploy a web application firewall with rules to detect and block parameter enumeration attempts
• Restrict access to the Medical History module to essential personnel only until properly patched

# Example: Apache .htaccess to restrict access to the vulnerable module
# Place in the module directory as a temporary measure
<Files "medical-history.php">
    Order Deny,Allow
    Deny from all
    # Allow only from trusted admin IPs
    Allow from 192.168.1.0/24
</Files>