🚨 [security] Update next 16.2.2 → 16.2.3 (patch)

[depfu]

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🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

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Here is everything you need to know about this upgrade. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ next (16.2.2 → 16.2.3) · Repo

Security Advisories 🚨

🚨 Next.js has a Denial of Service with Server Components

A vulnerability affects certain React Server Components packages for versions 19.x 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-2026-23869. You can read more about this advisory our this changelog.

A specially crafted HTTP request can be sent to any App Router Server Function endpoint that, when deserialized, may trigger excessive CPU usage. This can result in denial of service in unpatched environments.

Release Notes

16.2.3

Note

This release is backporting security and bug fixes. For more information about the fixed security vulnerability, please see https://vercel.com/changelog/summary-of-cve-2026-23869. The release does not include all pending features/changes on canary.

Core Changes

• Ensure app-page reports stale ISR revalidation errors via onRequestError (#92282)
• Fix [Bug]: manifest.ts breaks HMR in Next.js 16.2 (#91981 through #92273)
• Deduplicate output assets and detect content conflicts on emit (#92292)
• Fix styled-jsx race condition: styles lost due to concurrent rendering (#92459)
• turbo-tasks-backend: stability fixes for task cancellation and error handling (#92254)

Credits

Huge thanks to @icyJoseph, @sokra, @wbinnssmith, @eps1lon and @ztanner for helping!

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 9 commits:

• v16.2.3
• [16.x] Avoid consuming cyclic models multiple times (#75)
• [backport]: Ensure app-page reports stale ISR revalidation errors via onRequestError (#92282) (#92519)
• fix(server-hmr): metadata routes overwrite page runtime HMR handler (#92273)
• next-core: deduplicate output assets and detect content conflicts on emit (#92292)
• Fix styled-jsx race condition: styles lost due to concurrent rendering (#92459)
• turbo-tasks-backend: stability fixes for task cancellation and error handling (#92254)
• Fix DashMap read-write self-deadlock in task_cache causing hangs (#92210)
• Backport: new view-transitions guide, update and fixes (#92264)

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ℹ️ Recent review info

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Run ID: 8a3e8092-0a2a-4cb8-91c9-1bb40efe9beb

📥 Commits

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⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (2)

• playgrounds/nextjs/package.json
• playgrounds/v3/package.json

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Walkthrough

The next dependency version was updated in two package configuration files. The playgrounds/nextjs/package.json file was modified to change the next version from 16.2.2 to 16.2.3. Similarly, the playgrounds/v3/package.json file was updated with the same version change for the next dependency. No other dependencies, scripts, or configuration values were altered in these files.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: updating the Next.js dependency from 16.2.2 to 16.2.3 to address security vulnerabilities.
Description check	✅ Passed	The description is directly related to the changeset, providing detailed information about the security vulnerability (CVE-2026-23869), release notes, and changes included in the patch version update.

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