Next.js 安全漏洞

Next.js is a React framework open source by Vercel. Versions of Next.js from 12.2.0 to 15.5.16, as well as versions before 16.2.5, have security vulnerabilities. These vulnerabilities arise from using the Pages Router and when configuring i18n and middleware or proxy authorization. In these cases...

CVE-2026-33490 h3: Missing Path Segment Boundary Check in `mount()` Causes Middleware Execution on Unrelated Prefix-Matching Routes

H3 is a minimal HTTP framework. In versions 2.0.0-0 through 2.0.1-rc.16, the mount method in h3 uses a simple startsWith check to determine whether incoming requests fall under a mounted sub-application's path prefix. Because this check does not verify a path segment boundary i.e., that the next...

CVE-2026-33490

The connected document provides concrete details for CVE-2026-33490: a missing path-segment boundary check in the h3 library allows a mounted sub-app at a base path (e.g., /admin) to leak middleware-induced context (such as isAdmin) to unrelated routes that merely share the string prefix (e.g., /...

GHSA-2J6Q-WHV2-GH6W h3: Missing Path Segment Boundary Check in `mount()` Causes Middleware Execution on Unrelated Prefix-Matching Routes

Summary The mount method in h3 uses a simple startsWith check to determine whether incoming requests fall under a mounted sub-application's path prefix. Because this check does not verify a path segment boundary i.e., that the next character after the base is / or end-of-string, middleware...