Next.js 15.2.5 refines the React framework, building upon the solid foundation of version 15.2.4. While both versions share identical dependencies for core functionality like busboy, postcss, @next/env, styled-jsx, @swc/counter, @swc/helpers, and caniuse-lite, subtle improvements are introduced. Developers will notice that although the vast majority of the devDependencies remain at similar versions across both releases, the newer version benefits from the latest advancements in the Next.js ecosystem, with some packages version upgraded.
Key differences that might interest developers keen on performance and stability are also reflected in the optional dependencies, specifically in the @next/swc packages for various platforms (darwin, linux, win32) and architectures (x64, arm64). These reflect ongoing efforts to enhance the compiler's efficiency and platform compatibility. Both versions support the same peer dependencies (sass, react, react-dom, @playwright/test and @opentelemetry/api), ensuring a smooth upgrade path for existing projects. The newer version boasts a slightly smaller file count and unpacked size, indicating optimizations. Finally, the updated releaseDate pinpoints the new version and keeps the library up-to-date. Upgrading to 15.2.5 provides incremental improvements, platform specific compiler updates and new versions of the dev dependencies that could enhance performance of React projects.
All the vulnerabilities related to the version 15.2.5 of the package
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
