{"id":"CVE-2025-14542","aliases":["EUVD-2025-203260","GHSA-75mj-4g74-9rg2","PYSEC-2026-2000"],"status":"published","title":"Command execution in python-utcp allows attackers to achieve remote code execution when fetching a remote Manual from a malicious endpoint","description":"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":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00264,"percentile":0.1847,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-501"],"published":"2025-12-13T09:59:41Z","modified":"2026-10-28T02:30:50Z","fixes":[{"ecosystem":"PyPI","package":"utcp","fixed_in":["1.1.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"utcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"utcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0"}]}],"versions":["0.1.0","0.1.2","0.1.3","0.1.4","0.1.5","0.1.6","0.1.7","0.1.8","0.2.0","0.2.1","0.2.2","0.2.3","1.0.0","1.0.1","1.0.2","1.0.3","1.0.4"]},{"source":"osv","ecosystem":"PyPI","package":"utcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0"}]}],"versions":["0.1.0","0.1.2","0.1.3","0.1.4","0.1.5","0.1.6","0.1.7","0.1.8","0.2.0","0.2.1","0.2.2","0.2.3","1.0.0","1.0.1","1.0.2","1.0.3","1.0.4"]}],"references":[{"url":"https://research.jfrog.com/vulnerabilities/python-utcp-untrusted-manual-command-execution-jfsa-2025-001648329/","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/universal-tool-calling-protocol/python-utcp/commit/2dc9c02df72cad3770c934959325ec344b441444","tags":["patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-14542","tags":["advisory"]},{"url":"https://research.jfrog.com/vulnerabilities/python-utcp-untrusted-manual-command-execution-jfsa-2025-001648329","tags":["web"]},{"url":"https://github.com/advisories/GHSA-75mj-4g74-9rg2","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/14xxx/CVE-2025-14542.json","tags":["advisory"]},{"url":"https://pypi.org/project/pip","tags":["package"]},{"url":"https://github.com/universal-tool-calling-protocol/python-utcp","tags":["web"]},{"url":"https://pypi.org/project/utcp","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-14542","title":"Command execution in python-utcp allows attackers to achieve remote code execution when fetching a remote Manual from a malicious endpoint","description":"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.","status":"published","published":"2025-12-13T09:59:41.376Z","modified":"2025-12-13T22:54:11.29Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-501"],"updated_at":"2026-11-02T14:32:28.621398Z"}],"euvd":[{"id":"EUVD-2025-203260","description":"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.","status":"published","published":"2025-12-13T09:59:41Z","modified":"2025-12-13T22:54:11Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:49:05.447386Z"}],"ghsa":[{"id":"GHSA-75mj-4g74-9rg2","title":"Universal Tool Calling Protocol (UTCP) client library for Python vulnerable to Trust Boundary Violation through Manual JSON specification","description":"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.","status":"published","published":"2025-12-13T18:30:21Z","modified":"2025-12-15T23:55:43Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-501"],"updated_at":"2026-11-02T14:39:13.204325Z"}],"nvd":[{"id":"CVE-2025-14542","description":"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.","status":"published","published":"2025-12-13T16:16:51.407Z","modified":"2026-10-14T13:10:00.187Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-501"],"updated_at":"2026-11-02T14:11:50.400521Z"}],"osv":[{"id":"CVE-2025-14542","title":"Command execution in python-utcp allows attackers to achieve remote code execution when fetching a remote Manual from a malicious endpoint","description":"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.","status":"published","published":"2025-12-13T09:59:41.376Z","modified":"2026-10-28T02:30:50.078174422Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-501"],"updated_at":"2026-11-02T15:44:46.340268Z"},{"id":"GHSA-75mj-4g74-9rg2","title":"Universal Tool Calling Protocol (UTCP) client library for Python vulnerable to Trust Boundary Violation through Manual JSON specification","description":"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.","status":"published","published":"2025-12-13T18:30:21Z","modified":"2026-07-07T17:56:39.853999638Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-501"],"updated_at":"2026-11-02T15:46:40.657155Z"},{"id":"PYSEC-2026-2000","title":"Universal Tool Calling Protocol (UTCP) client library for Python vulnerable to Trust Boundary Violation through Manual JSON specification","description":"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.","status":"published","published":"2026-07-07T16:03:12.815097Z","modified":"2026-07-07T17:47:54.161359607Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:55.537808Z"}]}}