@utcp/http before 1.1.14 contains a server-side request forgery vulnerability that allows remote manuals to reach loopback services by bypassing the remote-loopback check with a {host} placeholder. Attackers can supply host arguments like 127.0.0.1 or register tools via Streamable HTTP and SSE discovery to access internal services on the agent machine.

CVSS Details

CVSS 4.0 Base Score: 2.3
CVSS 3.1 Base Score: 4.7
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N)

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CVSS Details

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CVE-2026-129094: universal-tool-calling-protocol @utcp/http: @utcp/http before 1.1.14 contains a server-side request forgery vulnerability that allows remote manuals to reach…

CVSS Details

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