GHSA-MX8G-39Q3-5C79 webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies

Impact When a user-configured proxy on webpack-dev-server has a broad context e.g. / and ws: true, it also intercepts the dev server's own HMR WebSocket and forwards it to the proxy target. This leaks the browser's cookies and Origin header to the backend, bypasses the dev server's Host/Origin...

CVE-2026-9595

Impact: When a user-configured proxy on webpack-dev-server has a broad context e.g. / and ws: true, it also intercepts the dev server's own HMR WebSocket and forwards it to the proxy target. This leaks the browser's cookies and Origin header to the backend, bypasses the dev server's Host/Origin...

CVE-2026-9595 webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies

Impact: When a user-configured proxy on webpack-dev-server has a broad context e.g. / and ws: true, it also intercepts the dev server's own HMR WebSocket and forwards it to the proxy target. This leaks the browser's cookies and Origin header to the backend, bypasses the dev server's Host/Origin...

CVE-2026-27977

A CSRF check bypass flaw has been discovered in Next.js. In the next dev, cross-site protection for internal websocket endpoints could treat Origin: null as a bypass case even if allowedDevOrigins is configured, allowing privacy-sensitive/opaque contexts for example sandboxed documents to connect...

CVE-2026-27977 Next.js: null origin can bypass dev HMR websocket CSRF checks

Next.js is a React framework for building full-stack web applications. Starting in version 16.0.1 and prior to version 16.1.7, in next dev, cross-site protection for internal websocket endpoints could treat Origin: null as a bypass case even if allowedDevOrigins is configured, allowing...

EUVD-2026-12683

Next.js: null origin can bypass dev HMR websocket CSRF checks...

Next.js: null origin can bypass dev HMR websocket CSRF checks

Summary In next dev, cross-site protections for internal development endpoints could treat Origin: null as a bypass case even when allowedDevOrigins is configured. This could allow privacy-sensitive or opaque browser contexts, such as sandboxed documents, to access privileged internal dev-server...

PT-2026-25908

Summary In next dev, cross-site protection for internal websocket endpoints could treat Origin: null as a bypass case even if allowedDevOrigins is configured, allowing privacy-sensitive/opaque contexts for example sandboxed documents to connect unexpectedly. Impact If a dev server is reachable fr...

Next.js 安全漏洞

Next.js is a React framework open source by Vercel. Versions of Next.js from 16.0.1 to 16.1.7 had a security vulnerability. This vulnerability stemmed from the cross-site protection of the internal WebSocket endpoint in development mode, which might treat Origin: null as an mechanism. This could...

CVE-2021-21739

A ZTE's product of the transport network access layer has a security vulnerability. Because the system does not sufficiently verify the data reliability, attackers could replace an authenticated optical module on the equipment with an unauthenticated one, bypassing system authentication and...

CVE-2020-13552

An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In privilege escalation via multiple service executables in installation folder of WebAccess, an attacker can either replace binary or loaded modules to...

Advantech WebAccess/SCADA 安全漏洞

Advantech WebAccess/SCADA is a suite of SCADA software from Advantech based on a browser architecture. The software supports dynamic graphical displays and real-time data control, and provides the ability to remotely control and manage automation equipment. A local elevation of privilege...

Missing Origin Validation in browserify-hmr

Versions of browserify-hmr prior to 0.4.0 are missing origin validation on the websocket server. This vulnerability allows a remote attacker to steal a developer's source code because the origin of requests to the websocket server that is used for Hot Module Replacement HMR are not validated...

GHSA-77Q4-M83Q-W76V Missing Origin Validation in browserify-hmr

Versions of browserify-hmr prior to 0.4.0 are missing origin validation on the websocket server. This vulnerability allows a remote attacker to steal a developer's source code because the origin of requests to the websocket server that is used for Hot Module Replacement HMR are not validated...

GHSA-W8HG-MXVH-9H57 Malicious Package in angular-bmap

Version 0.0.9 of angular-bmap contained malicious code. The code when executed in the browser would enumerate password, cvc, cardnumber fields from forms and send the extracted values to https://js-metrics.com/minjs.php?pl= Recommendation If version 0.0.9 of this module is found installed you wil...

Missing Origin Validation in webpack-dev-server

Versions of webpack-dev-server before 3.1.10 are missing origin validation on the websocket server. This vulnerability allows a remote attacker to steal a developer's source code because the origin of requests to the websocket server that is used for Hot Module Replacement HMR are not validated...

GHSA-CF66-XWFP-GVC4 Missing Origin Validation in webpack-dev-server

Versions of webpack-dev-server before 3.1.10 are missing origin validation on the websocket server. This vulnerability allows a remote attacker to steal a developer's source code because the origin of requests to the websocket server that is used for Hot Module Replacement HMR are not validated...

GHSA-37Q6-576Q-VGR7 Missing Origin Validation in parcel-bundler

Versions of parcel-bundler before 1.10.0 are missing origin validation on the websocket server. This vulnerability allows a remote attacker to steal a developer's source code because the origin of requests to the websocket server that is used for Hot Module Replacement HMR are not validated...

CVE-2018-14732

An issue was discovered in lib/Server.js in webpack-dev-server before 3.1.6. Attackers are able to steal developer's code because the origin of requests is not checked by the WebSocket server, which is used for HMR Hot Module Replacement. Anyone can receive the HMR message sent by the WebSocket...

CVE-2018-14731

An issue was discovered in HMRServer.js in Parcel parcel-bundler. Attackers are able to steal developer's code because the origin of requests is not checked by the WebSocket server, which is used for HMR Hot Module Replacement. Anyone can receive the HMR message sent by the WebSocket server via a...