提交 #823134: SourceCodester Water Billing Management System in PHP/OOP Free Source Code 1.0 Authorization Bypass

A critical vulnerability in the Water Billing Management System allows unauthenticated attackers to create new administrative accounts. By sending a specially crafted POST request to the user management endpoint, an attacker can bypass the intended administrative interface and gain full control over the system.

Vulnerability Description The file /wbms/classes/Users.php contains a function save (triggered by the parameter f=save) that handles the creation and modification of user accounts. This endpoint lacks a session validation check or middleware to verify if the requester has administrative privileges.

Because the system uses an OOP approach where the class method is directly accessible via a GET/POST parameter, an external attacker can invoke the "save" logic without being logged in. By setting the type parameter to 1 (commonly representing the Admin role in this codebase), the attacker can elevate their privileges immediately.

• 来源: ⚠️ https://github.com/renzortega1337/Security-Research-/blob/main/Unauthenticated%20Admin%20Creation%20in%20PHP%20System.md
• 用户: renzortega1337 (UID 98096)
• 提交: 2026-05-08 15時10分 (5 月前)
• 管理: 2026-05-31 10時24分 (23 days later)
• 状态: 已接受
• VulDB条目: 367515 [SourceCodester Water Billing Management System 1.0 User Management Endpoint Users.php?f=save 权限提升]
• 积分: 20