{"id":"CVE-2026-101059","revision":"71afc7d6f51b4427b8fbced605422ff4","records":[{"revision":"71afc7d6f51b4427b8fbced605422ff4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-101059","aliases":[],"title":"utcp-http before 1.1.4 OAuth2 tokenUrl Trust Boundary Bypass","description":"utcp-http before 1.1.4 fails to validate the OAuth2 tokenUrl field from remote OpenAPI specifications, allowing attackers to redirect credential submission to arbitrary endpoints. When a victim registers an attacker-controlled OpenAPI spec and invokes a generated OAuth2-protected tool, the library POSTs the victim's client_id and client_secret to the attacker-supplied token endpoint without URL validation.","state":0,"publishedAt":"2026-09-27T17:02:40.181+00:00","modifiedAt":"2026-09-28T14:02:40.274+00:00","affected":[{"ecosystem":"Vendor product","name":"python-utcp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"universal-tool-calling-protocol\",\n                    \"product\": \"python-utcp\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:pypi/utcp-http\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"1.1.4\"\n                        },\n                        {\n                            \"version\": \"1.1.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-8cp3-qxj6-px34","https://www.vulncheck.com/advisories/utcp-http-before-1.1.4-oauth2-tokenurl-trust-boundary-bypass"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-101059","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-101059","identifiers":["CVE-2026-101059"]},"retained":false,"historicalAffected":[]}],"coverage":[]}