Enviar #802054: dh1011 auto-favicon 1.0.1 Server-Side Request Forgeryinformación

Títulodh1011 auto-favicon 1.0.1 Server-Side Request Forgery
DescripciónThe 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.
Fuente⚠️ https://github.com/dh1011/auto-favicon-mcp/issues/2
Usuario
 MidA (UID 96794)
Sumisión2026-04-10 13:02 (hace 6 meses)
Moderación2026-04-26 22:03 (16 days later)
EstadoAceptado
Entrada de VulDB359749 [dh1011 auto-favicon hasta f189116a9259950c2393f114dbcb94dde0ad864b MCP Tool server.py generate_favicon_from_url image_url escalada de privilegios]
Puntos20

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