Daniel, a 16-year-old hacker and high school senior, discovered significant vulnerabilities in Mintlify, an AI documentation platform used by major companies. He found a cross-site scripting (XSS) vulnerability that could allow attackers to inject malicious scripts into documentation, potentially stealing user credentials with just one click. This was particularly concerning because it affected multiple companies that hosted their documentation on Mintlify. His investigation began after Discord announced a switch to Mintlify for their documentation. Familiar with Discord's API and having reported nearly 100 vulnerabilities previously, Daniel started probing the new system. He initially tried exploiting path traversal attacks but shifted focus to the Mintlify API endpoints. After extensive exploration, he found an endpoint that returned static files, which allowed him to embed JavaScript in an SVG file. When he tested this through Discord, it worked, confirming the vulnerability. After sharing his findings with friends, they collectively reported the issue to Discord, which took immediate action, shutting down its developer documentation for two hours while assessing the risks. Mintlify's team contacted Daniel and his friends directly to address the vulnerabilities. Their responsible disclosure led to a quick remediation of the issues, ultimately affecting several high-profile clients, including Twitter and Vercel. For their efforts, the group received around $11,000 in bug bounties, emphasizing the importance of securing supply chains to prevent widespread issues.