CVE-2026-45370

Published May 14th, 2026

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CVSS v3

7.7

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

python-utcp is the python implementation of UTCP. Prior to 1.1.3, _prepare_environment() in cli_communication_protocol.py passes a full copy of os.environ to every CLI subprocess. When combined with CVE-2026-45369, an attacker can exfiltrate all process-level secrets in a single tool call. This vulnerability is fixed in 1.1.3.

universal-tool-calling-protocol/python-utcp

Official python implementation of UTCP. UTCP is an open standard that lets AI agents call any API directly, without extra middleware.

GitHub

644