Identity Management / Same Person or Identity Can Register Multiple Times

Web and API


The vulnerability "Same person or identity can register multiple times" of category Identity Management occurs when users are able to register with the same personal information multiple times. This vulnerability is also described in the Common Weakness Enumeration (CWE) directory as CWE-602: Client-Side Enforcement of Server-Side Security. The Open Web Application Security Project (OWASP) Testing Guide also describes this vulnerability and provides a testing guide for how to identify it.


The risk of this vulnerability is high as it can lead to malicious users creating multiple accounts with the same information and potentially gaining access to private information. It can also create a situation where users can gain access to multiple accounts if they are able to access the same credentials.


The best solution to this vulnerability is to use a system that ensures that each identity can only be used to create one account. This can be done by using identity verification techniques such as email or phone number verification. Additionally, it can also be done by implementing measures to limit the number of accounts that can be created with the same identity or by implementing a captcha system to prevent automated accounts from being created.

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