提出 #802054: dh1011 auto-favicon 1.0.1 Server-Side Request Forgery情報

タイトルdh1011 auto-favicon 1.0.1 Server-Side Request Forgery
説明The generate_favicon_from_url MCP tool accepts an arbitrary image_url, opens a new aiohttp.ClientSession(), and performs session.get(image_url) without any destination validation. The server does not restrict scheme, host, port, redirect target, or resolved IP address. As a result, an untrusted MCP caller can direct the service to fetch loopback, RFC1918, link-local, or cloud-metadata endpoints and then process the returned bytes as if they were a favicon source image.
ソース⚠️ https://github.com/dh1011/auto-favicon-mcp/issues/2
ユーザー
 MidA (UID 96794)
送信2026年04月10日 13:02 (6 月 ago)
モデレーション2026年04月26日 22:03 (16 days later)
ステータス承諾済み
VulDBエントリ359749 [dh1011 auto-favicon 迄 f189116a9259950c2393f114dbcb94dde0ad864b MCP Tool server.py generate_favicon_from_url image_url 特権昇格]
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