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 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

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-2026-48998

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 (Python ASGI framework) contains a Host header validation issue in versions before 1.0.1. The HTTP Host header was not validated when reconstructing request.url, while routing relies on the raw path and request.url, allowing a malformed Host header to make request.url.path differ from t...

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...

net/url: Incorrect parsing of IPv6 host literals in net/url

The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid...

RHEL 9 : Red Hat JBoss Enterprise Application Platform 8.0.12 (RHSA-2026:3891)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:3891 advisory. Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly application runtime. This release o...

undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without...

CVE-2026-27959

Koa is middleware for Node.js using ES2017 async functions. Prior to versions 3.1.2 and 2.16.4, Koa's ctx.hostname API performs naive parsing of the HTTP Host header, extracting everything before the first colon without validating the input conforms to RFC 3986 hostname syntax. When a malformed...

undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without...

Important: Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.3 security update

An update is now available for Red Hat JBoss Enterprise Application Platform 8.1 for Red Hat Enterprise Linux 8. A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1. Red Hat Product Security has rated this update as having a security impact of Important. A...

openSUSE: Security Advisory for go1.12 (openSUSE-SU-2019:2000-1)

The remote host is missing an update for the Copyright C 2020 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...