CVE-2026-86414
Severity not reportedData quality: awaiting analysis.
NVD has not completed analysis, so CVSS and affected-product data may be missing or change.
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 `C…
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
—
Awaiting analysis by NVD
Timeline (UTC)
Published: 2026-10-20 21:17
Modified: 2026-10-22 16:57
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 07:04 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://curl.se/docs/CVE-2026-86414.html 2499f714-1537-4658-8207-48ae4bb9eae9
- https://curl.se/docs/CVE-2026-86414.json 2499f714-1537-4658-8207-48ae4bb9eae9
- https://hackerone.com/reports/3993566 2499f714-1537-4658-8207-48ae4bb9eae9
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:04 UTC · record ↗