CVE-2010-1766: Digia Qt

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

Off-by-one error in the WebSocketHandshake::readServerHandshake function in websockets/WebSocketHandshake.cpp in WebCore in WebKit before r56380, as used in Qt and other products, allows remote websockets servers to cause a denial of service (memory corruption) or possibly have unspecified other impact via an upgrade header that is long and invalid.

Affected products

• Digia Qt: up to and including 4.6.2
• Webkit Webkit: up to and including r56379

Published 2010-07-22. Last modified 2026-06-16.