{"id":"CVE-2026-86411","published":"2026-10-20T20:17:25.533","lastModified":"2026-10-22T17:21:57.293","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://curl.se/docs/CVE-2026-86411.html","tags":[]},{"url":"https://curl.se/docs/CVE-2026-86411.json","tags":[]},{"url":"https://hackerone.com/reports/3973190","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}