{"schema":"threatline.record/2","record":{"id":"CVE-2026-101059","aliases":["GHSA-8cp3-qxj6-px34"],"summary":"utcp-http before 1.1.4 OAuth2 tokenUrl Trust Boundary Bypass","details":"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.","categories":["Runtimes & languages"],"product":"python-utcp","vendor":"universal-tool-calling-protocol","ecosystem":"PyPI","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-101059","source_modified_at":"2026-09-28T14:02:40.274Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"python-utcp","vendor":"universal-tool-calling-protocol","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"1.1.4"},{"version":"1.1.4","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-8cp3-qxj6-px34","source_modified_at":"2026-08-26T00:01:36.372283063Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"utcp-http","ecosystem":"PyPI","purl":"pkg:pypi/utcp-http"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.4"}]}],"versions":["1.0.0","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5","1.1.0","1.1.1","1.1.2","1.1.3"]}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-101059","source_modified_at":"2026-09-28T14:02:40.274Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"python-utcp","ecosystem":null},"version":"1.1.4","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-8cp3-qxj6-px34","source_modified_at":"2026-08-26T00:01:36.372283063Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"utcp-http","ecosystem":"PyPI","purl":"pkg:pypi/utcp-http"},"version":"1.1.4"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00182,"percentile":0.07397,"score_date":"2026-10-23"},"published_at":"2026-09-27T17:02:40.181Z","modified_at":"2026-09-28T14:02:40.274Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-101059","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-28T14:02:40.274Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-8cp3-qxj6-px34","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-08-26T00:01:36.372283063Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-101059","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-8cp3-qxj6-px34","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/utcp-http-before-1.1.4-oauth2-tokenurl-trust-boundary-bypass","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-28T14:00:16.325429Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-28T14:02:40.274Z","content_hash":"dab9865da89672cbc99db0c94c525cce1c3044b3788aac1d35c69100c61c74a1"}}