CVE-2026-84394

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse returns it as the ho...

CVE-2026-84394

fast-uri (a URI parsing library used by the Fastify ecosystem) contains a host confusion vulnerability: when a URI's authority contains an opening bracket [ without a matching closing bracket ], parse() returns the string as the host without error. Neither an IP literal nor a valid domain name is...

Linux Distros Unpatched Vulnerability : CVE-2026-61666

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in...

DEBIAN-CVE-2026-61666

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666

CVE-2026-61666 affects the Ruby gem websocket-driver (a WebSocket protocol handler with pluggable I/O). In versions prior to 0.8.2 , WebSocket::Driver.server() passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError. A remote client can e...

CVE-2026-61666

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

GHSA-C2W2-PRH8-QM98 guzzlehttp/psr7: Host Confusion via Weak URI Host Validation

Impact guzzlehttp/psr7 did not reject URI host components containing authority delimiters /, ?, , @, or , an embedded port such as host:8080, or IPv6 brackets that do not frame the host such as ::1 or ::1. Uri::assertValidHost rejected only control characters, so these malformed hosts were...

GHSA-2X63-GW47-W4MM websocket-driver-ruby: Denial of service via malformed Host header

Impact If this library is used to implement a WebSocket server on top of a TCP server, by using the WebSocket::Driver.server method, then a client can cause the server to crash by sending a Host header that is not a valid host:port string. When this happens, a URI::InvalidURIError exception is...

EUVD-2026-41559

webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header...

GHSA-M28W-2PQF-7QGJ webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header

Impact An unauthenticated peer that can reach the webpack-dev-server process can terminate it by sending either a normal HTTP request with a malformed Host header, or a WebSocket upgrade to the default /ws endpoint with a malformed Origin header. The malformed header triggers an uncaught exceptio...

Uncaught Exception

Overview Affected versions of this package are vulnerable to Uncaught Exception in the server process when handling a malformed Host header. An attacker can cause the server to crash by sending a specially crafted Host header that is not a valid host:port string, resulting in an uncaught exceptio...

SUSE CVE-2026-14631

webpack-dev-server versions 5.2.5 and earlier terminate the whole Node.js process when an unauthenticated peer sends either a normal HTTP request with a malformed Host header or a WebSocket upgrade to the default /ws endpoint with a malformed Origin header. The malformed value causes an uncaught...

CVE-2026-14631

Vulnerability overview: CVE-2026-14631 affects webpack-dev-server up to version 5.2.5. An unauthenticated peer sending a normal HTTP request with a malformed Host header or a WebSocket upgrade to /ws with a malformed Origin header triggers an uncaught exception in the host-validation path, crashi...

CVE-2026-14631 webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header

webpack-dev-server versions 5.2.5 and earlier terminate the whole Node.js process when an unauthenticated peer sends either a normal HTTP request with a malformed Host header or a WebSocket upgrade to the default /ws endpoint with a malformed Origin header. The malformed value causes an uncaught...

CVE-2026-14631 webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header

webpack-dev-server versions 5.2.5 and earlier terminate the whole Node.js process when an unauthenticated peer sends either a normal HTTP request with a malformed Host header or a WebSocket upgrade to the default /ws endpoint with a malformed Origin header. The malformed value causes an uncaught...

CVE-2026-48998

GuzzleHttp/psr7 (PHP) before version 2.10.2 is affected by improper Host header validation when parsing raw HTTP requests or deriving a server request URI from server variables. An attacker can supply a Host header containing URI delimiters (for example [email protected]) that can be r...

UBUNTU-CVE-2026-48710

Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP Host request header was not validated before being used to reconstruct request.url. Because the routing algorithm relies on the raw HTTP path while request.url is rebuilt from the Host header, a malformed header...

CVE-2026-48710

Starlette , a lightweight Python ASGI framework, is vulnerable to a Host header injection that allows bypass of path-based security restrictions. Prior to version 1.0.1 , the HTTP Host request header was not validated before being used to reconstruct request.url, so a malformed header could make ...