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python-utcp EUVD-2026-30475

| CVE-2026-45369 HIGH
OS Command Injection (CWE-78)
2026-05-14 security-advisories@github.com GHSA-33p6-5jxp-p3x4
8.3
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Source Code Evidence Fetched
May 14, 2026 - 22:05 vuln.today
Analysis Generated
May 14, 2026 - 22:05 vuln.today
Patch available
May 14, 2026 - 22:02 EUVD
CVE Published
May 14, 2026 - 21:16 nvd
HIGH 8.3

DescriptionNVD

python-utcp is the python implementation of UTCP. Prior to 1.1.3, the _substitute_utcp_args method in cli_communication_protocol.py inserts user-controlled tool_args values directly into shell command strings without any sanitization or escaping. These commands are then executed via /bin/bash -c (Unix) or powershell.exe -Command (Windows), allowing an attacker to inject arbitrary shell commands. This vulnerability is fixed in 1.1.3.

AnalysisAI

Command injection in python-utcp allows remote attackers to execute arbitrary shell commands on Unix and Windows systems when user-controlled tool arguments are processed by the CLI communication protocol module. The _substitute_utcp_args method in cli_communication_protocol.py directly embeds unsanitized user input into bash or PowerShell commands without escaping, enabling full remote code execution. …

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RemediationAI

Within 24 hours: Identify all systems and applications using python-utcp and document current versions in use. Within 7 days: Upgrade python-utcp to version 1.1.2 or later across all affected systems; prioritize production and internet-facing deployments. …

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EUVD-2026-30475 vulnerability details – vuln.today

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