CVE-2026-92402 in crm
Summary
by MITRE • 09/16/2026
A security flaw has been discovered in ChangeWeDer crm up to c07bd4c97141521af6475034bc58523beed51bbd. This issue affects the function index of the file UserController.java of the component top.upstudy.crm.controller.UserController. The manipulation results in missing authorization. The attack can be launched remotely. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the ChangeWeDer CRM application, specifically affecting versions up to commit c07bd4c97141521af6475034bc58523beed51bbd. The root cause is located in the UserController.java file, which serves as a critical component for managing user-related operations within the application's architecture. This particular flaw manifests as an authorization bypass, allowing attackers to access or manipulate resources that should be restricted based on their authentication status and assigned roles. Because the project does not utilize traditional versioning schemes, it is impossible to definitively map this vulnerability to specific release numbers, meaning any deployment prior to the referenced commit hash may potentially contain this defect. The lack of response from the project maintainers further complicates remediation efforts for existing users who rely on official updates or patches.
From a technical perspective, the flaw represents a classic case of broken access control where the application fails to properly verify whether an authenticated user has sufficient privileges to perform a specific action via the index function in UserController.java. In typical web applications, this endpoint might handle listing users, retrieving profile details, or modifying account settings. Without proper authorization checks, any remote attacker who can authenticate to the system—or potentially exploit additional flaws to bypass authentication entirely—can interact with these endpoints without restriction. This aligns directly with CWE-285 Improper Authorization, a category of vulnerabilities where an actor is able to access resources or perform actions for which they should not have been granted permission. The absence of robust role-based access control checks at this specific entry point creates a significant security gap that undermines the integrity and confidentiality of user data managed by the CRM system.
The operational impact of this vulnerability is severe, particularly given its remote exploitability. An attacker can launch attacks from any network location without requiring physical proximity to the target infrastructure. By exploiting this missing authorization check, an adversary could potentially enumerate all users in the database, extract sensitive personal information such as email addresses and contact details, or even modify user accounts if write operations are exposed through the same endpoint. This level of access can lead to data breaches, unauthorized administrative actions, and potential lateral movement within a network environment where this CRM system is integrated with other services. The ability to manipulate user data remotely increases the risk profile significantly, as automated scanning tools could easily identify vulnerable instances by probing these endpoints for expected responses that indicate successful unauthorized access.
Mitigation strategies must focus on immediate code-level fixes since no official patch has been released due to the lack of maintainer response. Developers should audit the UserController.java file and ensure that every method within it is protected by appropriate authorization annotations or middleware checks that validate user roles against required permissions for each specific action. Implementing strict input validation and enforcing least-privilege principles will help prevent unauthorized data access. Additionally, organizations running this version of ChangeWeDer CRM should consider implementing Web Application Firewall rules to detect and block suspicious requests targeting the affected endpoints until a permanent fix is applied. Long-term solutions involve adopting proper semantic versioning for future releases to facilitate clearer vulnerability tracking and ensuring that security reviews are integrated into the development lifecycle to catch such authorization flaws before deployment.