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-2026-14631 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...

SUSE 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...

PT-2026-55576

Name of the Vulnerable Software and Affected Versions webpack-dev-server versions prior to 5.2.6 Description An unauthenticated peer can cause the Node.js process to terminate, resulting in a denial of service. This occurs when the server receives a normal HTTP request with a malformed Host heade...

CVE-2026-10054: Missing Origin Validation in WebSockets

In affected versions of Eclipse Theia 1.8.1 and later, the browser backend exposes privileged terminal RPC over WebSocket /services/shell-terminal, /services/terminals/:id without service-level authentication. WebSocket origin validation in @theia/core is fail-open: connections are accepted when...

PT-2026-55523

Name of the Vulnerable Software and Affected Versions Eclipse Theia versions 1.8.1 and later Description The browser backend exposes privileged terminal RPC over WebSocket endpoints '/services/shell-terminal' and '/services/terminals/:id' without service-level authentication. The WebSocket origin...

SUSE SLED15 / SLES15 Security Update : python-tornado (SUSE-SU-2026:2726-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2726-1 advisory. This update for python-tornado fixes the following issues - CVE-2026-49853: authorization header forwarded...

CVE-2026-14631: Improper Input Validation

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...

9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Summary The fix for CVE-2026-46339 unauthenticated RCE via unprotected MCP plugin routes introduced a local-only access gate in src/dashboardGuard.js that restricts spawn-capable routes /api/mcp/, /api/tunnel/, /api/cli-tools/ to loopback requests. The gate determines "local" by inspecting the Ho...

GHSA-6G2F-W7G3-77VF 9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Summary The fix for CVE-2026-46339 unauthenticated RCE via unprotected MCP plugin routes introduced a local-only access gate in src/dashboardGuard.js that restricts spawn-capable routes /api/mcp/, /api/tunnel/, /api/cli-tools/ to loopback requests. The gate determines "local" by inspecting the Ho...

User Impersonation

Overview 9router is a 9Router CLI - Start and manage 9Router server Affected versions of this package are vulnerable to User Impersonation via the isLocalRequest function. An attacker can gain unauthorized access to restricted routes and interact with child processes by spoofing the Host and Orig...

CVE-2026-9595

A flaw was found in webpack-dev-server. When a user configures a proxy with a broad context, such as '/', and enables WebSocket ws: true forwarding, the development server's own Hot Module Replacement HMR WebSocket can be intercepted. This interception leads to the leakage of the browser's cookie...

EUVD-2026-40359

SeaweedFS before 4.30 reflects the callback query parameter verbatim into responses served with Content-Type application/javascript in the shared writeJson helper weed/server/common.go, with no callback-name validation, no X-Content-Type-Options: nosniff header, and no CORS allow-list. Every JSON...

PraisonAI Browser Server allows unauthenticated WebSocket clients to hijack connected extension sessions

Summarypraisonai browser start exposes the browser bridge on 0.0.0.0 by default, and its /ws endpoint accepts websocket clients that omit the Origin header entirely. An unauthenticated network client can connect as a fake controller, send startsession, cause the server to forward startautomation ...

PYSEC-2026-485 PraisonAI Browser Server allows unauthenticated WebSocket clients to hijack connected extension sessions

Summary praisonai browser start exposes the browser bridge on 0.0.0.0 by default, and its /ws endpoint accepts websocket clients that omit the Origin header entirely. An unauthenticated network client can connect as a fake controller, send startsession, cause the server to forward startautomation...

PYSEC-2026-467 PraisonAI Browser Server allows unauthenticated WebSocket clients to hijack connected extension sessions

Summary praisonai browser start exposes the browser bridge on 0.0.0.0 by default, and its /ws endpoint accepts websocket clients that omit the Origin header entirely. An unauthenticated network client can connect as a fake controller, send startsession, cause the server to forward startautomation...

PraisonAI Browser Server allows unauthenticated WebSocket clients to hijack connected extension sessions

Summarypraisonai browser start exposes the browser bridge on 0.0.0.0 by default, and its /ws endpoint accepts websocket clients that omit the Origin header entirely. An unauthenticated network client can connect as a fake controller, send startsession, cause the server to forward startautomation ...