Next.js: Cache confusion of response bodies for requests with bodies

Impact A server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. Confidential data in the POST's response body would then leak to unauthorized requests. Though the request itself will not be deduped. This only applies to...

PT-2026-63563

Impact A server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. Confidential data in the POST's response body would then leak to unauthorized requests. Though the request itself will not be deduped. This only applies to...

PT-2026-63556

Impact Crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. Workarounds No workaround exists besides upgrading. Applications using Pages Router or not using...

PT-2026-63562

Impact A server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. Confidential data in the POST's response body would then leak to unauthorized requests. Though the request itself will not be deduped. This is only an issu...

next.js: Next.js: Information disclosure due to middleware bypass in Pages Router with i18n

A flaw was found in Next.js. Applications utilizing the Pages Router with internationalization i18n configured and middleware or proxy-based authorization are susceptible to unauthorized access. A remote attacker can exploit this by making locale-less /next/data//.json requests, which bypass the...

Linux Distros Unpatched Vulnerability : CVE-2026-44573

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

CVE-2026-44573

A flaw was found in Next.js. Applications utilizing the Pages Router with internationalization i18n configured and middleware or proxy-based authorization are susceptible to unauthorized access. A remote attacker can exploit this by making locale-less /next/data//.json requests, which bypass the...

Next.js Framework 12.2.x < 15.5.16 / 16.x < 16.2.5 Information Disclosure

The Next.js Framework on the remote host is affected by an information disclosure vulnerability: - 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//.json requests...

CVE-2026-44573

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...

CVE-2026-44573 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...

CVE-2026-44573 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...

CVE-2026-44573 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.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...

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

NPM: Next.js has a Middleware / Proxy bypass in Pages Router applications using i18n vulnerability discovered by ? in WordPress Npm next versions = 12.2.0, 15.5.16...

GHSA-36QX-FR4F-26G5 Next.js has a Middleware / Proxy bypass in Pages Router applications using i18n

Impact 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//.json requests. In affected configurations, middleware does not run for the unprefixed data route, allowing...

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

Impact 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//.json requests. In affected configurations, middleware does not run for the unprefixed data route, allowing...

EUVD-2025-14946

Malicious code in bioql PyPI...

VulnCheck KEV: CVE-2024-46982

Next.js is a React framework for building full-stack web applications. By sending a crafted HTTP request, it is possible to poison the cache of a non-dynamic server-side rendered route in the pages router this does not affect the app router. When this crafted request is sent it could coerce...

Denial Of Service

Next.js is vulnerable to Denial of Service. The vulnerability is due to a race condition in misconfigured Pages Router setups allowing pageProps data to be served instead of standard HTML responses...

GHSA-QPJV-V59X-3QC4 Next.js Race Condition to Cache Poisoning

Summary We received a responsible disclosure from Allam Rachid zhero for a low-severity race-condition vulnerability in Next.js. This issue only affects the Pages Router under certain misconfigurations, causing normal endpoints to serve pageProps data instead of standard HTML. Learn more here...