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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| universal-tool-calling-protocol | python-utcp | < 1.1.2 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | utcp-cli | < 1.1.2 | 1.1.2 | GHSA-5v57-8rxj-3p2r |