chore(deps): update dependency next to v15.4.8 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
next (source)	15.4.2 -> 15.4.8

GitHub Vulnerability Alerts

CVE-2025-55173

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

CVE-2025-57752

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

CVE-2025-57822

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

GHSA-9qr9-h5gf-34mp

A vulnerability affects certain React packages¹ for versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 and frameworks that use the affected packages, including Next.js 15.x and 16.x using the App Router. The issue is tracked upstream as CVE-2025-55182.

Fixed in:
React: 19.0.1, 19.1.2, 19.2.1
Next.js: 15.0.5, 15.1.9, 15.2.6, 15.3.6, 15.4.8, 15.5.7, 16.0.7, 15.6.0-canary.58, 16.1.0-canary.12+

The vulnerability also affects experimental canary releases starting with 14.3.0-canary.77. Users on any of the 14.3 canary builds should either downgrade to a 14.x stable release or 14.3.0-canary.76.

All users of stable 15.x or 16.x Next.js versions should upgrade to a patched, stable version immediately.

¹ The affected React packages are:

• react-server-dom-parcel
• react-server-dom-turbopack
• react-server-dom-webpack

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Release Notes

vercel/next.js (next)

v15.4.8

Compare Source

v15.4.7

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• fix router handling when setting a location response header #​82588

Credits

Huge thanks to @​ztanner for helping!

v15.4.6

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• fix: _error page's req.url can be overwritten to dynamic param on minimal mode (#​82347)
• fix: add ?dpl to fonts in /_next/static/media (#​82384)

Credits

Huge thanks to @​devjiwonchoi, @​ijjk, and @​styfle for helping!

v15.4.5

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Fix API stripping JSON incorrectly (#​82062)
• Fix i18n fallback: false collision (#​82158)
• Revert "Fix tracing of server actions imported by client components (#​82167)
• Ensure setAssetPrefix updates config instance (#​82165)
• Turbopack: update mimalloc (#​82166)
• fix(next/image): fix image-optimizer.ts headers (#​82175)
• fix(next/image): improve and simplify detect-content-type (#​82174)

Credits

Huge thanks to @​ijjk, @​sokra, and @​styfle for helping!

v15.4.4

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Fix dynamicParams false layout case in dev (#​82026)
• Turbopack: fix scope hoisting variable renaming bug (#​81640)
• Upgrade to swc v33 (#​81750)
• Revert "[metadata] use https protocol for schema urls" (#​81934)

Credits

Huge thanks to @​bgw @​mischnic @​huozhi @​lukesandberg and @​ijjk for helping!

v15.4.3

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Turbopack: fix dist dir on Windows (#​81758)

Credits

Huge thanks to @​mischnic for helping!

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