Claude Code has a Domain Validation Bypass which Allows Automatic Requests to Attacker-Controlled Domains

Claude Code is an agentic coding tool. Prior to version 1.0.111, Claude Code contained insufficient URL validation in its trusted domain verification mechanism for WebFetch requests. The application used a startsWith() function to validate trusted domains (e.g., docs.python.org, modelcontextprotocol.io), this could have enabled attackers to register domains like modelcontextprotocol.io.example.com that would pass validation. This could enable automatic requests to attacker-controlled domains without user consent, potentially leading to data exfiltration. This issue has been patched in version 1.0.111.

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指向未可信站点的URL重定向(开放重定向)

Claude Code 输入验证错误漏洞

Claude Code是Anthropic开源的一个代理编码工具。 Claude Code 1.0.111之前版本存在输入验证错误漏洞，该漏洞源于WebFetch请求的受信任域验证机制存在URL验证不足，可能导致数据渗漏。

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