Case Studies

Real-world security outcomes from focused engineering engagements. Detailed reports on vulnerabilities, exploitation scenarios, and remediation strategies.

Case Study: Preventing Large-Scale Financial Fraud in a Payment Platform

--- Cyvocate identified and reported a critical payment logic flaw in a leading fintech platform. The vulnerability allowed attackers to purchase $100 worth of credits while paying only $1. If exploited at scale, this l…

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Case Study: Web3 Payment Spoofing Vulnerability

Cyvocate uncovered a critical flaw in a Web3-integrated payment system that allowed attackers to spoof blockchain payments without executing any real on-chain transaction. By forging responses from the blockchain API, m…

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Session Hijack via Chained Vulnerabilities (XSS + WAF Bypass + SSTI)

At CYVOCATE, we often encounter complex vulnerabilities that are not impactful on their own but, when chained together, result in severe exploitation potential. In this engagement, we discovered and exploited a session …

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Improper Authorization via Response Manipulation

--- At CYVOCATE, we often uncover subtle authorization flaws that attackers can exploit with simple manipulation techniques. In this engagement, we identified and exploited a response manipulation vulnerability where cl…

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Client-Side Trust of Sensitive API Response

One of the most common mistakes we encounter is trusting the client-side to enforce business logic. In this engagement, we identified that the application trusted sensitive API responses for test progression. By modifyi…

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