CVE-2017-1000209

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

The Java WebSocket client nv-websocket-client does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL/TLS servers via an arbitrary valid certificate.

Metrics

CVSS 3.0 5.9/10CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Nov 17, 2017
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2017-1000209: Medium severity, CVSS 5.9 | Vulnix