Executive Summary

This vulnerability is an insecure direct object reference (IDOR) in the Fullstep V5 registration process. It allows authenticated users to access data belonging to other registered users by exploiting certain vulnerable authenticated endpoints in the application.

Specifically, the vulnerability exists in endpoints such as '/api/suppliers/v1/suppliers//false' which lists user information, and '/#/supplier-registration/supplier-registration//2' which allows updating user information like personal details and documents.

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Impact Analysis

This vulnerability can lead to unauthorized access to sensitive user data by authenticated users who should not have access to other users' information.

It may result in exposure or modification of personal details and documents of other users, potentially leading to privacy breaches, data leakage, and misuse of personal information.

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Compliance Impact

The vulnerability allows authenticated users to access data belonging to other registered users due to an insecure direct object reference (IDOR) in the Fullstep V5 registration process. This unauthorized access to personal data can lead to violations of data protection regulations such as GDPR and HIPAA, which require strict controls on access to personal and sensitive information.

Specifically, the exposure of personal details and documents through vulnerable endpoints may result in non-compliance with requirements for confidentiality, integrity, and privacy of user data mandated by these standards.

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