CVE-2026-86411
Discovered by AISLEPUBLISHEDCWE-488
Description
An `ftp://` transfer configured with `CURLUSESSL_NONE` can reuse a pooled FTP control connection that a previous easy handle upgraded with `STARTTLS` and authenticated using a client certificate. The second handle performs neither a new TLS handshake nor a new FTP login, so the server continues to authorize it under the first handle's certificate identity.
CVSS Base Scores
CVSS v3.1(Primary)
4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| curl | — | — |