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@renovate renovate bot commented Dec 12, 2025

This PR contains the following updates:

Package Change Age Confidence
next (source) 15.0.6 -> 15.0.7 age confidence

GitHub Vulnerability Alerts

CVE-2024-56332

Impact

A Denial of Service (DoS) attack allows attackers to construct requests that leaves requests to Server Actions hanging until the hosting provider cancels the function execution.

Note: Next.js server is idle during that time and only keeps the connection open. CPU and memory footprint are low during that time.

Deployments without any protection against long running Server Action invocations are especially vulnerable. Hosting providers like Vercel or Netlify set a default maximum duration on function execution to reduce the risk of excessive billing.

This is the same issue as if the incoming HTTP request has an invalid Content-Length header or never closes. If the host has no other mitigations to those then this vulnerability is novel.

This vulnerability affects only Next.js deployments using Server Actions.

Patches

This vulnerability was resolved in Next.js 14.2.21, 15.1.2, and 13.5.8. We recommend that users upgrade to a safe version.

Workarounds

There are no official workarounds for this vulnerability.

Credits

Thanks to the PackDraw team for responsibly disclosing this vulnerability.

CVE-2025-29927

Impact

It is possible to bypass authorization checks within a Next.js application, if the authorization check occurs in middleware.

Patches

  • For Next.js 15.x, this issue is fixed in 15.2.3
  • For Next.js 14.x, this issue is fixed in 14.2.25
  • For Next.js 13.x, this issue is fixed in 13.5.9
  • For Next.js 12.x, this issue is fixed in 12.3.5
  • For Next.js 11.x, consult the below workaround.

Note: Next.js deployments hosted on Vercel are automatically protected against this vulnerability.

Workaround

If patching to a safe version is infeasible, we recommend that you prevent external user requests which contain the x-middleware-subrequest header from reaching your Next.js application.

Credits

  • Allam Rachid (zhero;)
  • Allam Yasser (inzo_)

CVE-2025-32421

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

Credit
Thank you to Allam Rachid (zhero) for the responsible disclosure. This research was rewarded as part of our bug bounty program.

CVE-2025-48068

Summary

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

Credit

Thanks to sapphi-red and Radman Siddiki for responsibly disclosing this issue.

CVE-2025-49826

Summary

A vulnerability affecting Next.js has been addressed. It impacted versions 15.0.4 through 15.1.8 and involved a cache poisoning bug leading to a Denial of Service (DoS) condition.

Under certain conditions, this issue may allow a HTTP 204 response to be cached for static pages, leading to the 204 response being served to all users attempting to access the page

More details: CVE-2025-49826

Credits

  • Allam Rachid zhero;
  • Allam Yasser (inzo)

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-2025-57822

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

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

GHSA-5j59-xgg2-r9c4

It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and did not fully prevent denial-of-service attacks in all payload types. This affects React package versions 19.0.2, 19.1.3, and 19.2.2 and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x and 16.x using the App Router. The issue is tracked upstream as CVE-2025-67779.

A malicious HTTP request can be crafted and sent to any Server Function endpoint that, when deserialized, can enter an infinite loop within the React Server Components runtime. This can cause the server process to hang and consume CPU, resulting in denial of service in unpatched environments.


Release Notes

vercel/next.js (next)

v15.0.7

Compare Source


Configuration

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vercel bot commented Dec 12, 2025

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Project Deployment Preview Comments Updated (UTC)
codecoolture Ready Ready Preview Comment Dec 12, 2025 5:37pm

@renovate renovate bot force-pushed the renovate/npm-next-vulnerability branch from 01051c3 to aa234f5 Compare December 12, 2025 17:35
@renovate renovate bot changed the title Update dependency next to v15.4.7 [SECURITY] Update dependency next to v15.0.7 [SECURITY] Dec 12, 2025
@renovate renovate bot merged commit b277236 into trunk Dec 12, 2025
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@renovate renovate bot deleted the renovate/npm-next-vulnerability branch December 12, 2025 21:07
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