CVE-2026-86414
Discovered by AISLEPUBLISHEDCWE-201
Description
An HTTP proxy can trick libcurl into sending the origin's credentials (Basic password, or a Negotiate/Kerberos ticket) to the proxy itself, by answering the `CONNECT` tunnel request with 401 `WWW-Authenticate:` instead of the expected 407 `Proxy-Authenticate:`.
CVSS Base Scores
CVSS v3.1(Primary)
5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| curl | — | — |