CVE-2026-59898

Technical details for CVE-2026-59898 are not publicly available in the provided documents. Monitor for updates.

CVE-2026-59898 Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

CVE-2026-59898 Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

CVE-2026-59900 Netty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

CVE-2026-59900

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

EUVD-2026-50442

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

CVE-2026-59900 Netty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

CVE-2026-59900

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer "Http2StreamFrameToHttpObjectCodec" and "InboundHttp2ToHttpAdapter" fails to deduplicate or validate "Host" headers when an HTTP/2...

CVE-2026-59900 Netty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

CVE-2026-59900

Netty CVE-2026-59900 affects the HTTP/2→HTTP/1.x translation in Netty’s HTTP/2-to-HTTP/1.x codec (Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter). When an HTTP/2 client sends both the :authority pseudo-header and a literal Host header in the same HEADERS frame, the translator may...

CVE-2026-59919 Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's HAProxy encoder HAProxyMessageEncoder writes AFUNIX source and destination socket addresses into the HAProxy V1 text protocol without validating them for CRLF...

CVE-2026-59919 Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's HAProxy encoder HAProxyMessageEncoder writes AFUNIX source and destination socket addresses into the HAProxy V1 text protocol without validating them for CRLF...

CVE-2026-59919

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's HAProxy encoder HAProxyMessageEncoder writes AFUNIX source and destination socket addresses into the HAProxy V1 text protocol without validating them for CRLF...

CVE-2026-59919 Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's HAProxy encoder HAProxyMessageEncoder writes AFUNIX source and destination socket addresses into the HAProxy V1 text protocol without validating them for CRLF...

CVE-2026-59920 Netty: STOMP CONNECT Frame Header Injection

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder StompSubframeEncoder does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline \n characters in a header value are...

CVE-2026-59920 Netty: STOMP CONNECT Frame Header Injection

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder StompSubframeEncoder does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline \n characters in a header value are...

CVE-2026-59920 Netty: STOMP CONNECT Frame Header Injection

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder StompSubframeEncoder does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline \n characters in a header value are...

EUVD-2026-50424

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder StompSubframeEncoder does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline \n characters in a header value are...

CVE-2026-59920

Netty CVE-2026-59920 concerns the STOMP framing path: the STOMP encoder StompSubframeEncoder intentionally does not escape header values for CONNECT and CONNECTED frames, allowing raw newline characters to be written to the wire. This creates a header-injection risk, because a header value contai...

CVE-2026-59920

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder StompSubframeEncoder does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline \n characters in a header value are...