{"schema":"threatline.record/2","record":{"id":"CVE-2026-86411","aliases":[],"summary":"FTP connection reuse inherits client-certificate","details":"An `ftp://` transfer configured with `CURLUSESSL_NONE` can reuse a pooled FTP\ncontrol connection that a previous easy handle upgraded with `STARTTLS` and\nauthenticated using a client certificate. The second handle performs neither a\nnew TLS handshake nor a new FTP login, so the server continues to authorize it\nunder the first handle's certificate identity.","categories":["Libraries & packages"],"product":"curl","vendor":"curl","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86411","source_modified_at":"2026-10-20T20:02:03.431Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"curl","vendor":"curl","versions":[{"version":"8.21.0","status":"affected","lessThanOrEqual":"8.21.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00139,"percentile":0.03,"score_date":"2026-10-23"},"published_at":"2026-10-20T20:02:03.431Z","modified_at":"2026-10-20T20:02:03.431Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-86411","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T20:02:03.431Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-86411","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://curl.se/docs/CVE-2026-86411.json"},{"source":"CVE List","url":"https://curl.se/docs/CVE-2026-86411.html"},{"source":"CVE List","url":"https://hackerone.com/reports/3973190"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-20T20:02:03.431Z","content_hash":"b8a51ef521314ff42b7c68bf4beaf07664355b4ab502347cf9433f4b9996141d"}}