Next.js 14.2.22 represents a minor advancement over version 14.2.21, primarily focusing on internal package updates and refinements. While both versions share the same core dependencies like busboy, postcss, @next/env, styled-jsx, graceful-fs, @swc/helpers, and caniuse-lite, the key distinction lies in the updated @next/swc and @next/react-refresh-utils dependencies, reflecting improvements in the underlying Rust-based compiler and fast refresh mechanism.
Developers leveraging Next.js will appreciate these targeted updates as they directly impact build performance and the development experience. While the vast majority of devDependencies and peerDependencies remain consistent—including crucial tools like Webpack, Babel, Terser, and React itself—the minor version bump indicates a focus on stability and incremental enhancements rather than groundbreaking feature additions.
The differences in optional dependencies, specifically @next/swc-*, are due to compilation target changes. These updates are important because they ensure compatibility with diverse architectures such as Darwin (x64 and arm64), Linux (x64-gnu, x64-musl, arm64-gnu, arm64-musl), and Windows (x64-msvc, ia32-msvc, arm64-msvc). The file size increase and release data show that Next.js 14.2.22 released a week after 14.2.21 and had a minor increase in size, which suggests some additions to the code but not so many as to trigger a major or minor version number update. This makes 14.2.22 a recommended update for Next.js users who want bug fixes and performance fixes.
All the vulnerabilities related to the version 14.2.22 of the package
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.
Credit
Thank you to Allam Rachid (zhero) for the responsible disclosure. This research was rewarded as part of our bug bounty program.
Authorization Bypass in Next.js Middleware
It is possible to bypass authorization checks within a Next.js application, if the authorization check occurs in middleware.
15.2.314.2.2513.5.912.3.5Note: Next.js deployments hosted on Vercel are automatically protected against this vulnerability.
If patching to a safe version is infeasible, it is recommend that you prevent external user requests which contain the x-middleware-subrequest header from reaching your Next.js application.
Information exposure in Next.js dev server due to lack of origin verification
A low-severity vulnerability in Next.js has been fixed in version 15.2.2. This issue may have allowed limited source code exposure when the dev server was running with the App Router enabled. The vulnerability only affects local development environments and requires the user to visit a malicious webpage while npm run dev is active.
Because the mitigation is potentially a breaking change for some development setups, to opt-in to the fix, you must configure allowedDevOrigins in your next config after upgrading to a patched version. Learn more.
Learn more: https://vercel.com/changelog/cve-2025-48068
Thanks to sapphi-red and Radman Siddiki for responsibly disclosing this issue.
Next.js Affected by Cache Key Confusion for Image Optimization API Routes
A vulnerability in Next.js Image Optimization has been fixed in v15.4.5 and v14.2.31. When images returned from API routes vary based on request headers (such as Cookie or Authorization), these responses could be incorrectly cached and served to unauthorized users due to a cache key confusion bug.
All users are encouraged to upgrade if they use API routes to serve images that depend on request headers and have image optimization enabled.
More details at Vercel Changelog
Next.js Content Injection Vulnerability for Image Optimization
A vulnerability in Next.js Image Optimization has been fixed in v15.4.5 and v14.2.31. The issue allowed attacker-controlled external image sources to trigger file downloads with arbitrary content and filenames under specific configurations. This behavior could be abused for phishing or malicious file delivery.
All users relying on images.domains or images.remotePatterns are encouraged to upgrade and verify that external image sources are strictly validated.
More details at Vercel Changelog
Next.js Improper Middleware Redirect Handling Leads to SSRF
A vulnerability in Next.js Middleware has been fixed in v14.2.32 and v15.4.7. The issue occurred when request headers were directly passed into NextResponse.next(). In self-hosted applications, this could allow Server-Side Request Forgery (SSRF) if certain sensitive headers from the incoming request were reflected back into the response.
All users implementing custom middleware logic in self-hosted environments are strongly encouraged to upgrade and verify correct usage of the next() function.
More details at Vercel Changelog