ghsa-75mj-4g74-9rg2
Vulnerability from github
Published
2025-12-13 18:30
Modified
2025-12-15 23:55
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
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.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "utcp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-14542"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-501"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-15T23:55:42Z",
    "nvd_published_at": "2025-12-13T16:16:51Z",
    "severity": "HIGH"
  },
  "details": "The vulnerability arises when a client fetches a tools\u2019 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\u2019 trust, a malicious provider can later change the manual to exploit the client.",
  "id": "GHSA-75mj-4g74-9rg2",
  "modified": "2025-12-15T23:55:42Z",
  "published": "2025-12-13T18:30:21Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Universal Tool Calling Protocol (UTCP) client library for Python vulnerable to Trust Boundary Violation through Manual JSON specification"
}


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