CVE-2026-6402 webpack-dev-server vulnerable to cross-origin source code exposure on non-HTTPS origins

webpack-dev-server versions up to and including 5.2.3 are vulnerable to cross-origin source code exposure when serving over a non-potentially trustworthy origin such as plain HTTP. The previous fix relied on the Sec-Fetch-Mode and Sec-Fetch-Site request headers, which browsers omit for...

CVE-2026-6402

webpack-dev-server versions up to and including 5.2.3 are vulnerable to cross-origin source code exposure when serving over a non-potentially trustworthy origin such as plain HTTP. The previous fix relied on the Sec-Fetch-Mode and Sec-Fetch-Site request headers, which browsers omit for...

PT-2026-39959

Name of the Vulnerable Software and Affected Versions webpack-dev-server versions prior to 5.2.4 Description Cross-origin source code exposure occurs when serving over a non-potentially trustworthy origin, such as plain HTTP. The issue arises because the previous fix relied on Sec-Fetch-Mode and...

webpack-dev-server 安全漏洞

webpack-dev-server is an open-source application developed by webpack. Versions of webpack-dev-server prior to version 5.2.3 contained security vulnerabilities. These vulnerabilities stemmed from exposure to cross-origin code. When it provided services through non-potentially trusted sources, suc...

Sensitive Information Disclosure

Vite is vulnerable to Sensitive Information Disclosure. The vulnerability is due to improper enforcement of file access restrictions in the dev server, which allows an attacker to bypass deny rules using crafted query parameters and access sensitive files...

Exploit for CVE-2026-39363

CVE-2026-39363 Vite Dev Server WebSocket Arbitrary File Read...

CVE-2026-39365

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the...

CVE-2026-39363

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?r...

CVE-2026-39364

Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny e.g., .env, .crt can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are...

CVE-2026-39365

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the...

CVE-2026-39365

Vite Dev Server path traversal in optimized dependencies .map handling affects versions prior to 6.4.2, 7.3.2, and 8.0.5. The server resolves file paths via normalizePath(path.resolve(root, url.slice(1))) and calls readFile without restricting ../ segments, allowing retrieval of .map files outsid...

CVE-2026-39364 Vite has a `server.fs.deny` bypass with queries

Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny e.g., .env, .crt can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are...

EUVD-2026-19873

Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny e.g., .env, .crt can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are...

CVE-2026-39364

Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny e.g., .env, .crt can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are...

CVE-2026-39364

CVE-2026-39364 affects the Vite dev server. Vulnerable versions include Vite 7.1.0 through 7.3.1 and 8.0.0 through 8.0.4; on those, files that should be blocked by server.fs.deny (e.g., .env, *.crt) could be retrieved via HTTP 200 when requesting with certain query params (?raw, ?import&raw, or ?...

CVE-2026-39363

CVE-2026-39363 affects Vite Dev Server. The WebSocket-based fetchModule RPC can be invoked without an Origin header, bypassing HTTP path access checks and enabling arbitrary file reads via file:// URLs combined with ?raw or ?inline. This occurs in Vite versions 6.0.0 up to before 6.4.2, 7.3.2, an...

CVE-2026-39363 Vite Affected by Arbitrary File Read via Vite Dev Server WebSocket

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?r...

Directory Traversal

Overview vite-plus is a The Unified Toolchain for the Web Affected versions of this package are vulnerable to Directory Traversal via the handling of .map files in the dev server when resolving file paths. An attacker can access sensitive files outside the project root by injecting ../ segments...

Directory Traversal

Overview org.webjars.npm:vite is a Native-ESM powered web dev build tool Affected versions of this package are vulnerable to Directory Traversal via the handling of .map files in the dev server when resolving file paths. An attacker can access sensitive files outside the project root by injecting...

Vite: `server.fs.deny` bypassed with queries

Summary The contents of files that are specified by server.fs.deny can be returned to the browser. Impact Only apps that match the following conditions are affected: - explicitly exposes the Vite dev server to the network using --host or server.host config option - the sensitive file exists in th...