CVE-2026-39363

CVE-2026-39363 — Detección masiva de lectura arbitraria de archivos en Vite Dev Server WebSocket Descargo de responsabilidad: Esta herramienta está destinada únicamente a pruebas de seguridad autorizadas e investigación educativa. Los usuarios deben cumplir con las leyes y regulaciones locales;...

CVE-2026-39363

CVE-2026-39363 — PoC de lectura arbitraria de archivos en Vite Dev Server PoC ejecutable directamente para GHSA-p9ff-h696-f583. A través de un WebSocket HMR sin autenticación, invoca fetchModule, eludiendo la restricción server.fs.allow de la capa HTTP, para leer archivos arbitrarios en la máquin...

EUVD-2026-69705

Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock...

SUSE CVE-2026-84373

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

Linux Distros Unpatched Vulnerability : CVE-2026-84373

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in...

CVE-2026-84373

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

CVE-2026-84373

A flaw was found in Vitest, a testing framework. A remote attacker, able to reach an exposed development server, could exploit an issue in the mockerPlugin and interceptorPlugin exports. These plugins register a handler on Vite's unauthenticated HMR WebSocket without properly validating redirect...

CVE-2026-84373 Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

CVE-2026-84373 Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

CVE-2026-84373

CVE-2026-84373 affects Vitest (a Vite-powered testing framework) versions 2.1.0 through 4.1.10 and 5.0.0-rc.1 . The vulnerability exists in the mockerPlugin and interceptorPlugin exports within packages/mocker/src/node/interceptorPlugin.ts, which register a vitest:interceptor:register handler on ...

CVE-2026-84373 Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

PT-2026-84521

Name of the Vulnerable Software and Affected Versions Vitest versions 2.1.0 through 4.1.10 Vitest versions 5.0.0-rc.0 through 5.0.0-rc.1 Description The mockerPlugin and interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on...

CVE-2026-84373: Improper Limitation of a Pathname to a Restricted Directory

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

GHSA-279X-MWFV-VCQV Unauthenticated Nuxt DevTools RPC allows arbitrary command execution on the developer's host

Impact Nuxt DevTools development mode only exposes a bidirectional RPC channel over the Vite HMR WebSocket via the nuxt:devtools:rpc plugin. On affected versions the channel has no authentication: any client that can reach the Vite HMR endpoint ws://:/, subprotocol vite-hmr can call RPC methods,...

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...

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-2026-9595

The CVE affects webpack-dev-server where a user-configured proxy with a broad context (e.g., /) and ws: true intercepts the dev server’s HMR WebSocket, forwarding it to the proxy target. This can leak cookies and Origin headers to the backend, bypass Host/Origin validation, and corrupt the HMR so...

CVE-2026-9595: Origin Validation Error

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

CVE-2026-27977 affects the Next.js development server. The vulnerability lies in the Next.js dev mode where cross-site protection for internal HMR websocket endpoints could treat Origin: null as a permitted bypass even when allowedDevOrigins is configured, allowing privacy-sensitive contexts (e.g...

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...