CVE-2017-1000209

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CVSS 3.0

5.9 medium

EPSS

<1%p49

Published

Nov 17, 2017 (Nov 17, 2017)

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.

Vendors: nv-websocket-client project
Products: nv-websocket-client
Weakness: CWE-295
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.7%)

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