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...

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...

Improper Validation of Consistency within Input

Overview org.eclipse.jetty:jetty-server is a lightweight highly scalable java based web server and servlet engine. Affected versions of this package are vulnerable to Improper Validation of Consistency within Input through ComplianceUtils.verifyHttpURI, HttpFields, HttpCompliance,...

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

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 supplies both the :authority pseudo-header and a literal host header in a single HEADERS frame. The translator maps...

PT-2026-63548

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.136.Final Netty versions prior to 4.2.16.Final Description The HTTP/2-to-HTTP/1.x translation layer, specifically within Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter, fails to deduplicate or...

EUVD-2026-35073

Origin Validation Error vulnerability in ninenines gun gunhttp2 module allows cross-origin cookie injection via unvalidated HTTP/2 PUSHPROMISE authority. In gunhttp2:pushpromiseframe/7, the :authority pseudo-header from an incoming PUSHPROMISE frame is stored verbatim into the promised stream...

CVE-2026-43972 gun HTTP/2 PUSH_PROMISE authority not validated against connection origin allows cross-origin cookie injection

Origin Validation Error vulnerability in ninenines gun gunhttp2 module allows cross-origin cookie injection via unvalidated HTTP/2 PUSHPROMISE authority. In gunhttp2:pushpromiseframe/7, the :authority pseudo-header from an incoming PUSHPROMISE frame is stored verbatim into the promised stream...

PT-2026-47298

Name of the Vulnerable Software and Affected Versions ninenines gun versions 2.0.0 through 2.3.x Description An origin validation error in the gun http2 module allows cross-origin cookie injection through an unvalidated HTTP/2 PUSH PROMISE authority. In the push promise frame function, the...

GHSA-G53W-W6MJ-HRPP MCP Gateway: Authority-injection and JWT/session bypass via the unauthenticated router hair-pin "router-key" / "mcp-init-host" path

Summary The MCP router extproc exposes an initialize-method code path that, when a request carries an mcp-init-host header, bypasses the gateway JWT session validator and rewrites the upstream :authority header to whatever the caller chooses, gated only by a single shared header value router-key...

ROS-20260209-73-0004

A vulnerability in the onframerecvcallback function soup-server-message-io-http1.c of the GNOME GUI libsoup library is related to misinterpretation of input data when processing :scheme, :authority, and :path pseudo headers. Exploitation of the vulnerability could allow an attacker acting remotel...

SUSE CVE-2025-32908

A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service DoS...

DEBIAN-CVE-2025-32908

A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service DoS...

CVE-2024-32475 Envoy RELEASE_ASSERT using auto_sni with :authority header > 255 bytes

Envoy is a cloud-native, open source edge and service proxy. When an upstream TLS cluster is used with autosni enabled, a request containing a host/:authority header longer than 255 characters triggers an abnormal termination of Envoy process. Envoy does not gracefully handle an error when settin...

CVE-2024-32475 Envoy RELEASE_ASSERT using auto_sni with :authority header > 255 bytes

Envoy is a cloud-native, open source edge and service proxy. When an upstream TLS cluster is used with autosni enabled, a request containing a host/:authority header longer than 255 characters triggers an abnormal termination of Envoy process. Envoy does not gracefully handle an error when settin...