CVE-2026-45370: Cleartext Storage of Sensitive Information in an Environment Variable

python-utcp is the python implementation of UTCP. Prior to 1.1.3, prepareenvironment in clicommunicationprotocol.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...

PT-2026-41124

Name of the Vulnerable Software and Affected Versions python-utcp versions prior to 1.1.3 Description The prepare environment function in cli communication protocol.py passes a complete copy of os.environ to every CLI subprocess. This allows any environment variable in the host process, such as...

CVE-2025-14542

The CVE-2025-14542 issue affects the Python UTCP client library (utcp) where the client trusts a tool’s JSON Manual from a remote Manual Endpoint. A malicious remote Manual can alter the specification to execute arbitrary commands on the client, enabling remote code execution. Remediation provide...

CVE-2025-14542 Command execution in python-utcp allows attackers to achieve remote code execution when fetching a remote Manual from a malicious endpoint

The vulnerability arises when a client fetches a tools’ JSON specification, known as a Manual, from a remote Manual Endpoint. While a provider may initially serve a benign manual e.g., one defining an HTTP tool call, earning the clients’ trust, a malicious provider can later change the manual to...