CVE-2026-45369: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in universal-tool-calling-protocol python-utcp
CVE-2026-45369 is a high-severity OS command injection vulnerability in the python-utcp package prior to version 1. 1. 3. The vulnerability arises because the _substitute_utcp_args method in cli_communication_protocol. py directly inserts user-controlled input into shell command strings without sanitization, allowing execution of arbitrary commands via /bin/bash -c on Unix or powershell. exe -Command on Windows. This issue is fixed in version 1. 1. 3. No known exploits are reported in the wild.
AI Analysis
Technical Summary
The python-utcp package versions before 1.1.3 contain an OS command injection vulnerability (CWE-78) in the _substitute_utcp_args method. This method inserts user-supplied tool_args directly into shell commands executed by the system shell without escaping or sanitization. This allows an attacker with user interaction to inject arbitrary shell commands, potentially leading to full system compromise. The vulnerability affects versions earlier than 1.1.3 and has a CVSS 3.1 score of 8.3, indicating high severity. The issue is resolved in version 1.1.3.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary shell commands on the affected system with the privileges of the python-utcp process. This can lead to complete compromise of confidentiality, integrity, and availability of the system. The vulnerability requires user interaction and has a high attack complexity. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade python-utcp to version 1.1.3 or later, where this OS command injection vulnerability is fixed. Until the upgrade is applied, avoid passing untrusted input to the tool_args parameter or sanitize inputs rigorously before use. Patch status is not explicitly stated in vendor advisory content, but the fix is included in version 1.1.3 as per the description.
CVE-2026-45369: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in universal-tool-calling-protocol python-utcp
Description
CVE-2026-45369 is a high-severity OS command injection vulnerability in the python-utcp package prior to version 1. 1. 3. The vulnerability arises because the _substitute_utcp_args method in cli_communication_protocol. py directly inserts user-controlled input into shell command strings without sanitization, allowing execution of arbitrary commands via /bin/bash -c on Unix or powershell. exe -Command on Windows. This issue is fixed in version 1. 1. 3. No known exploits are reported in the wild.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The python-utcp package versions before 1.1.3 contain an OS command injection vulnerability (CWE-78) in the _substitute_utcp_args method. This method inserts user-supplied tool_args directly into shell commands executed by the system shell without escaping or sanitization. This allows an attacker with user interaction to inject arbitrary shell commands, potentially leading to full system compromise. The vulnerability affects versions earlier than 1.1.3 and has a CVSS 3.1 score of 8.3, indicating high severity. The issue is resolved in version 1.1.3.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary shell commands on the affected system with the privileges of the python-utcp process. This can lead to complete compromise of confidentiality, integrity, and availability of the system. The vulnerability requires user interaction and has a high attack complexity. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade python-utcp to version 1.1.3 or later, where this OS command injection vulnerability is fixed. Until the upgrade is applied, avoid passing untrusted input to the tool_args parameter or sanitize inputs rigorously before use. Patch status is not explicitly stated in vendor advisory content, but the fix is included in version 1.1.3 as per the description.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-12T00:51:29.085Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0635daec166c07b010dd36
Added to database: 5/14/2026, 8:51:38 PM
Last enriched: 5/14/2026, 9:06:39 PM
Last updated: 5/14/2026, 10:04:29 PM
Views: 4
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