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CVE-2025-14542

Good to know:

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Date: December 13, 2025

The vulnerability arises when a client fetches a tools’ JSON specification, known as a Manual, from a remote Manual Endpoint. While a provider may initially serve a benign manual (e.g., one defining an HTTP tool call), earning the clients’ trust, a malicious provider can later change the manual to exploit the client.

Severity Score

Related Resources (6)

https://research.jfrog.com/vulnerabilities/python-utcp-untrusted-manual-command-execution-jfsa-2025-001648329
https://nvd.nist.gov/vuln/detail/CVE-2025-14542
https://github.com/universal-tool-calling-protocol/python-utcp
https://github.com/universal-tool-calling-protocol/python-utcp/commit/2dc9c02df72cad3770c934959325ec344b441444
https://research.jfrog.com/vulnerabilities/python-utcp-untrusted-manual-command-execution-jfsa-2025-001648329/
https://www.mend.io/vulnerability-database/CVE-2025-14542

Severity Score

Weakness Type (CWE)

Trust Boundary Violation

CWE-501

Top Fix

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Upgrade Version

Upgrade to version utcp - 1.1.0;utcp - 1.1.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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