PT-2026-41123 · Pypi · Python-Utcp

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CVE-2026-45369

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Published

2026-05-14

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Updated

2026-06-29

CVSS v3.1

10

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions python-utcp versions prior to 1.1.3
Description The substitute utcp args method in cli communication protocol.py inserts user-controlled tool args values directly into shell command strings without sanitization or escaping. These commands are executed via /bin/bash -c on Unix or powershell.exe -Command on Windows, allowing an unauthenticated attacker to inject shell metacharacters such as ;, |, &, backticks, and $() to achieve remote code execution on the host system.
Recommendations Update to version 1.1.3 or newer. As a temporary workaround, refuse all attacker-controlled tool args.

Exploit

Fix

RCE

OS Command Injection

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Weakness Enumeration

Related Identifiers

CVE-2026-45369
GHSA-33P6-5JXP-P3X4
PYSEC-2026-560

Affected Products

Python-Utcp