CVE-2026-45370— python-utcp: Full Process Environment Exposed to CLI Subprocess - Secrets Leakage via Command Injection
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I. Basic Information for CVE-2026-45370
Vulnerability Information
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Vulnerability Title
python-utcp: Full Process Environment Exposed to CLI Subprocess - Secrets Leakage via Command Injection
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过环境变量导致的信息暴露
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| universal-tool-calling-protocol | python-utcp | < 1.1.2 | - |
II. Public POCs for CVE-2026-45370
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · universal-tool-calling-protocol · 2026-05-14 · 3 CVEs total
| CVE-2026-45369 | 8.3 HIGH | python-utcp: Command Injection via Unsanitized Argument Substitution in CLI Communication |
| CVE-2026-44661 | 4.7 MEDIUM | python-utcp: SSRF via attacker-controlled OpenAPI servers[0].url in HTTP communication pro |
IV. Related Vulnerabilities
Same weakness: CWE-526
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V. Comments for CVE-2026-45370
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