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Cloudflare Public Bug Bounty: `use-mcp`'s oauth2 process uses a window.open call with untrusted mcp server provided data allowing for code execution under the page using it

🗓️ 19 Jun 2025 17:24:47Reported by null_smashmaster0045Type 
hackerone
 hackerone
🔗 hackerone.com👁 5 Views

Bug in use-mcp allows code execution via window.open with untrusted data before sanitization.

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