CVE-2026-9603 in eDoc Doctor Appointment System
Summary
by MITRE • 05/27/2026
A security vulnerability has been detected in SourceCodester eDoc Doctor Appointment System 1.0. This affects an unknown part of the file /admin/delete-session.php. The manipulation of the argument ID leads to missing authorization. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.
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Analysis
by VulDB Data Team • 05/27/2026
This vulnerability resides within the SourceCodester eDoc Doctor Appointment System version 1.0 where the administrative component fails to properly validate user authorization before processing deletion requests. The specific file /admin/delete-session.php contains a critical flaw that allows unauthorized users to manipulate the ID parameter and execute deletion operations without proper authentication. This represents a classic authorization bypass vulnerability that directly violates the principle of least privilege and proper access control mechanisms.
The technical implementation flaw stems from the absence of robust session validation and user permission checks within the delete-session.php script. When an attacker supplies a malicious ID parameter, the system processes the deletion request without verifying whether the requesting user possesses the necessary administrative privileges or ownership rights over the target resource. This vulnerability falls under CWE-285 which specifically addresses improper authorization in software systems, making it particularly dangerous as it allows for privilege escalation and unauthorized data manipulation. The attack vector is remotely exploitable, meaning an attacker can leverage this vulnerability from outside the local network without requiring physical access or prior authentication.
The operational impact of this vulnerability extends beyond simple data deletion as it creates a potential pathway for more severe attacks including data corruption, information disclosure, and system compromise. An attacker could potentially delete critical appointment records, user accounts, or administrative session data which would disrupt the entire appointment management system. The public disclosure of this exploit significantly increases the risk surface as malicious actors can immediately deploy automated tools to identify and exploit vulnerable installations. This vulnerability directly maps to ATT&CK technique T1078 which covers valid accounts and privilege escalation through unauthorized access to administrative functions.
The mitigation strategies should focus on implementing proper input validation and authorization checks throughout the application's administrative interface. All requests to delete-session.php must verify that the requesting user has legitimate administrative privileges before processing any deletion operations. The system should implement session management controls that validate user authentication status and enforce role-based access controls. Additionally, parameterized queries and input sanitization should be implemented to prevent injection attacks that could compound the authorization bypass. Regular security audits and penetration testing should be conducted to identify similar authorization flaws across the entire application codebase, particularly in administrative components where sensitive operations are performed.