CVE-2018-11712: WebKitGTK Webkitgtk+

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

WebCore/platform/network/soup/SocketStreamHandleImplSoup.cpp in the libsoup network backend of WebKit, as used in WebKitGTK+ versions 2.20.0 and 2.20.1, failed to perform TLS certificate verification for WebSocket connections.

Affected products

• WebKitGTK Webkitgtk+: version 2.20.0 only; version 2.20.1 only

Published 2018-06-04. Last modified 2026-06-17.