CVE WATCH / VULNERABILITY DETAIL
CVE-2026-86414
UNKNOWNCVSS 0NVD feed
Published 20 October 2026 · tracked since 21 October 2026
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:`.
References
- NVD — National Vulnerability Database
- CVE.org record (MITRE)
- CISA Known Exploited Vulnerabilities catalog