Vulnerabilities in pkg:pypi/utcp

PACKAGE
Advisory Identifier: GHSA-75mj-4g74-9rg2
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Advisory Summary

CVE-2025-14542 is a HIGH (CVSS 7.5) universal tool calling protocol (utcp) vulnerability (CWE-501: Trust Boundary Violation) affecting Utcp libraries in the PyPI ecosystem. The issue involves universal tool calling protocol (utcp) client library for python vulnerable to trust boundary violation through manual json specification. Remediation is available by upgrading affected packages to version 1.1.0.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/utcp

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/utcp. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-75mj-4g74-9rg2 CVE-2025-14542 HIGH Universal Tool Calling Protocol (UTCP) client library for Python vulnerable to Trust Boundary Violation through Manual JSON specification

CVE-2025-14542 at a Glance

CVE Identifier CVE-2025-14542
GHSA Identifier GHSA-75mj-4g74-9rg2
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-501: Trust Boundary Violation
Affected Product Utcp
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2025-14542

To remediate this vulnerability, upgrade all affected Utcp dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

utcp fixed: 1.1.0 
pip install utcp>=1.1.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show utcp

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-14542, inspect your installed packages using pip:

pip show utcp

Analyze the terminal output to locate any version of Utcp in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.0), your application is affected.

Note: The pip show utcp command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-501: Trust Boundary Violation, where the product mixes trusted and untrusted data in the same data structure or structured message. In Utcp, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-14542 Affected Utcp Versions

1 component(s)
Fixed Versions:
1.1.0
Product / Package Ecosystem Affected Versions Fixed Version
utcp
pypi/utcp
PyPI
< 1.1.0
1.1.0

References

NVD — CVE-2025-14542 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-14542
Security Fix Commit FIX COMMIT
https://github.com/universal-tool-calling-protocol/python-utcp/commit/2dc9c02df72cad3770c934959325ec344b441444
Utcp Source Repository REPOSITORY
https://github.com/universal-tool-calling-protocol/python-utcp
research.jfrog.com/vulnerabilities/pyt... WEB
https://research.jfrog.com/vulnerabilities/python-utcp-untrusted-manual-command-execution-jfsa-2025-001648329

Frequently Asked Questions

What is CVE-2025-14542?
CVE-2025-14542 is a security vulnerability in Utcp involving Universal Tool Calling Protocol (UTCP) client library for Python vulnerable to Trust Boundary Violation through Manual JSON specification under CWE-501: Trust Boundary Violation.
Which Utcp versions are affected?
Affected versions include releases prior to 1.1.0 across affected packages: utcp.
What version fixes CVE-2025-14542?
Upgrading to 1.1.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is utcp affected?
Yes, utcp is affected in releases prior to 1.1.0. Upgrade your dependency to 1.1.0 or later.
What is the CVSS score of CVE-2025-14542?
CVE-2025-14542 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2025-14542?
CVE-2025-14542 is classified under CWE-501: Trust Boundary Violation (The product mixes trusted and untrusted data in the same data structure or structured message.).
How can I check PyPI dependencies for CVE-2025-14542?
Run the dependency tree command: 'pip show utcp'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-75mj-4g74-9rg2",
  "modified" : "2025-12-15T23:55:42Z",
  "published" : "2025-12-13T18:30:21Z",
  "aliases" : [ "CVE-2025-14542" ],
  "summary" : "Universal Tool Calling Protocol (UTCP) client library for Python vulnerable to Trust Boundary Violation through Manual JSON specification",
  "details" : "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" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "utcp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-14542"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/universal-tool-calling-protocol/python-utcp/commit/2dc9c02df72cad3770c934959325ec344b441444"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/universal-tool-calling-protocol/python-utcp"
  }, {
    "type" : "WEB",
    "url" : "https://research.jfrog.com/vulnerabilities/python-utcp-untrusted-manual-command-execution-jfsa-2025-001648329"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-501" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-15T23:55:42Z",
    "nvd_published_at" : "2025-12-13T16:16:51Z"
  }
}