medium.com/tag/bugbounty-writeup· Jul 12, 2026

Hacking the Hacker’s Assistant: How I Found a Critical Stored XSS in DeepSeek’s Code Sandbox

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What’s up, hackers? Sumit here, aka hacksage 😌 Continue reading on Medium »
🎯 Vulnerability: Cross-Site Scripting (XSS)
💡 Defense Fix: Enforce Context-Aware Output Encoding, strict Content-Security-Policy (CSP), and HttpOnly cookie flags.
#deepseek#bugbounty-writeup#xss-attack#xss-vulnerability#cybersecurity