CVE-2026-44573— Next.js 安全漏洞

Next.js: Middleware / Proxy bypass in Pages Router applications using i18n

Next.js is a React framework for building full-stack web applications. From 12.2.0 to before 15.5.16 and 16.2.5, Applications using the Pages Router with i18n configured and middleware/proxy-based authorization can allow unauthorized access to protected page data through locale-less /_next/data/<buildId>/<page>.json requests. In affected configurations, middleware does not run for the unprefixed data route, allowing an attacker to retrieve SSR JSON for protected pages without passing the intended authorization checks. This vulnerability is fixed in 15.5.16 and 16.2.5.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

授权机制不正确

Next.js 安全漏洞

Next.js是Vercel开源的一个 React 框架。 Next.js 12.2.0至15.5.16之前版本和16.2.5之前版本存在安全漏洞，该漏洞源于使用Pages Router且配置i18n和中间件或代理授权时，未对无语言前缀的/_next/data/<buildId>/<page>.json请求执行中间件，可能导致未经授权的访问受保护页面数据。

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