Cybersecurity

I Changed One "User_Id" and the API Said "Sure" - From Password Reset to Mass Account Takeover

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A critical account takeover vulnerability was discovered where an API's password reset endpoint allowed any user to change another user's password simply by providing a User_Id. This bypasses essential authentication and verification steps, enabling attackers to gain unauthorized access to accounts. Developers must ensure that API endpoints, especially those handling sensitive operations like password resets, rigorously validate user authorization on the backend rather than trusting client-provided identifiers.

Read the full article at InfoSec Write-ups - Medium

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