CVE-2026-86414

Not scored yetLast modified Oct 22, 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:`.

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Oct 20, 2026
Last modified
Oct 22, 2026
NVD status
Awaiting Analysis

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CVE-2026-86414: Unscored | Vulnix