Bump next from 13.5.4 to 16.2.6 in /client

[dependabot]

Bumps next from 13.5.4 to 16.2.6.

Release notes

Sourced from next's releases.

v16.2.6

[!NOTE] This release contains security fixes and backported bug fixes. It does not include all pending features/changes on canary.

Security Fixes

The following advisories have been addressed:

High:

• GHSA-8h8q-6873-q5fj: Denial of Service with Server Components
• GHSA-267c-6grr-h53f: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
• GHSA-26hh-7cqf-hhc6: Middleware / Proxy bypass in App Router applications via segment-prefetch routes - Incomplete Fix Follow-Up
• GHSA-mg66-mrh9-m8jx: Denial of Service via connection exhaustion in applications using Cache Components
• GHSA-492v-c6pp-mqqv: Middleware / Proxy bypass through dynamic route parameter injection
• GHSA-c4j6-fc7j-m34r: Server-side request forgery in applications using WebSocket upgrades
• GHSA-36qx-fr4f-26g5: Middleware / Proxy bypass in Pages Router applications using i18n

Moderate:

• GHSA-ffhc-5mcf-pf4q: Cross-site scripting in App Router applications using CSP nonces
• GHSA-gx5p-jg67-6x7h: Cross-site scripting in beforeInteractive scripts with untrusted input
• GHSA-h64f-5h5j-jqjh: Denial of Service in the Image Optimization API
• GHSA-wfc6-r584-vfw7: Cache poisoning in React Server Component responses

Low:

• GHSA-vfv6-92ff-j949: Cache poisoning via collisions in React Server Component cache-busting
• GHSA-3g8h-86w9-wvmq: Middleware / Proxy redirects can be cache-poisoned

Core Changes

• fix: preserve HTTP access fallbacks during prerender recovery (#92231)
• Fix fallback route params case in app-page handler (#91737)
• Fix invalid HTML response for route-level RSC requests in deployment adapter (#91541)
• Patch setHeader for direct route handlers (#93101)
• Include deployment id in cacheHandlers keys (#93453)
• Fix double-encoding of URL pathname parts in client param parsing (#93491)

v16.2.5

[!NOTE] This release contains security fixes and backported bug fixes. It does not include all pending features/changes on canary.

Security Fixes

The following advisories have been addressed:

High:

• GHSA-8h8q-6873-q5fj: Denial of Service with Server Components
• GHSA-267c-6grr-h53f: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
• GHSA-mg66-mrh9-m8jx: Denial of Service via connection exhaustion in applications using Cache Components
• GHSA-492v-c6pp-mqqv: Middleware / Proxy bypass through dynamic route parameter injection
• GHSA-c4j6-fc7j-m34r: Server-side request forgery in applications using WebSocket upgrades

... (truncated)

Commits

• ee6e79b v16.2.6
• afa053d Turbopack: Match proxy matchers with webpack implementation (#93594)
• 97a154e Turbopack: Fix middleware matcher suffix (#93590)
• 83899bc [backport] Disable build caches for production/staging/force-preview deploys ...
• 7b222b9 [backport][test] Pin package manager to patch versions (#93595)
• a8dc24f [backport] Turbopack: more strict vergen setup (#93587)
• 766148f v16.2.5
• 0dd9483 fix: add explicit checks for RSC header (#83) (#98)
• d166096 fix proxy matching for segment prefetch URLs (#89) (#96)
• 9d50c0b Strip next-resume header from incoming requests (#92)
• Additional commits viewable in compare view

Maintainer changes

This version was pushed to npm by GitHub Actions, a new releaser for next since your current version.

[dependabot]

Labels

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[SyniRon]

Holding this for a dedicated migration session — Next 13 → 16 is three major versions of breaking changes (14: Node minimum bump and App Router stabilization; 15: params / searchParams become async Promises, fetch is no longer cached by default, experimental-edge runtime removed; 16: Turbopack becomes the default build/dev engine, more deprecated APIs removed).

This also ideally lands together with the React 18 → 19 bump since Next 16 targets React 19, and #118 (React 18.2 → 18.3.1) is the safe stepping-stone for that.

Worth noting that the release notes list a stack of unpatched advisories that affect 13.5.4 (middleware/proxy bypass, SSRF via WebSocket upgrades, multiple DoS vectors). Whenever this is sequenced, prioritize it over feature work — the CVE pile grows as the version drifts further from current.

Leaving this Dependabot PR open as the reminder; will land via a dedicated branch when scheduled.