CVE-2026-45370
python-utcp: Full Process Environment Exposed to CLI Subprocess - Secrets Leakage via Command Injection
- State
- Published
- Severity
- 7.7 High
- Published
- May 14, 2026
- Updated
- May 15, 2026
- Reserved
- May 12, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.7 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | GitHub_M |
Weaknesses
- CWE-526 Cleartext Storage of Sensitive Information in an Environment Variable
Affected Products
| Product | Versions |
|---|---|
python-utcpuniversal-tool-calling-protocol |
|
References
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