medium.com/tag/ctf-writeup· Aug 17, 2026· by __jason__

Blockchain/Market Writeup

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Challenging Blockchain CTF Problem involving exploiting a vulnerable buy() function to gain access to CONFIG account. Continue reading on Medium »
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
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