CVE-2026-45369

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.

CVSS v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-33p6-5jxp-p3x4
https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-33p6-5jxp-p3x4

Configurations

No configuration.

History

26 Oct 2026, 14:10

Type	Values Removed	Values Added
Summary		(es) python-utcp es la implementación en Python de UTCP. Previo a la 1.1.3, el método _substitute_utcp_args en cli_communication_protocol.py inserta valores de tool_args controlados por el usuario directamente en cadenas de comandos de shell sin ninguna sanitización ni escape. Estos comandos se ejecutan luego a través de /bin/bash -c (Unix) o powershell.exe -Command (Windows), permitiendo a un atacante inyectar comandos de shell arbitrarios. Esta vulnerabilidad se corrige en la 1.1.3.

Information

Published : 2026-05-14 21:16

Updated : 2026-10-26 14:10

NVD link : CVE-2026-45369

Mitre link : CVE-2026-45369

CVE.ORG link : CVE-2026-45369

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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