Threats Tagged 'ghsa-4mp9-239f-g9hg'
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Threats Tagged 'ghsa-4mp9-239f-g9hg'
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Netty versions prior to 4.1.136.Final and 4.2.16.Final contain a vulnerability where an attacker can force a WebSocket upgrade using the lax V07 or V08 handshaker by sending a Sec-WebSocket-Version: 7 header while omitting the required Connection: Upgrade and Upgrade: websocket headers. This causes the protocol switch to complete in a way that proxies do not recognize as an upgrade request, enabling HTTP request smuggling or protocol confusion attacks. The issue has been fixed in versions 4.1.136.Final and 4.2.16.Final. Join the discussion | GCVE Database | 07/29/2026, 19:16:00 UTC Added: 07/22/2026, 23:23:02 UTC |
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