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chore(deps): bump next from 16.2.12 to 16.3.3 - #35

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cursor/update-nextjs-security-4efe
Aug 29, 2026
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chore(deps): bump next from 16.2.12 to 16.3.3#35
Bartek532 merged 1 commit into
mainfrom
cursor/update-nextjs-security-4efe

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@Bartek532

@Bartek532 Bartek532 commented Aug 29, 2026

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Summary

Upgrade Next.js from 16.2.12 to 16.3.3 to apply the August 2026 security release.

16.2.x is unpatched. The Active LTS patch is 16.3.3. This is a minor-version bump; Instant Navigations (cacheComponents / partialPrefetching) stay off, matching current app behavior.

The patched release addresses:

  • GHSA-2xp9-vwfh-vxw4 — unauthenticated RCE in the Image Optimization API when AVIF is used (AVIF optimization is disabled until an upstream libheif fix lands)
  • CVE-2026-75604 / GHSA-p293-qw3h-jr36 — unauthenticated RCE on Windows-hosted servers using both Pages Router and App Router without Cache Components

Related issues

Follows https://nextjs.org/blog/august-2026-security-release

Validation

  • bun run lint
  • bun run format
  • bun run build (▲ Next.js 16.3.3 (Turbopack), compiled and generated 171 static pages)
  • bun run build:registry if registry files changed (not needed)
  • Production smoke test: GET /, /docs, /sponsors, /sitemap.xml all returned 200 from next start

Checklist

  • I kept this PR focused on a single change.
  • I performed a self-review before requesting review.
  • I updated docs/examples if behavior changed.
  • I added screenshots or recordings for visible UI changes.

Notes

No application code or Next.js config changes. sharp (optional Next.js image-optimization dependency) updates as part of the Next.js 16.3.3 lockfile. Instant Navigations flags were not enabled.

The patched next@16.3.3 default image formats are ['image/webp'] only, and AVIF is in the image optimizer bypass list so attacker-controlled AVIF files are not decoded through libheif.

Open in Web Open in Cursor 

Patch Next.js to the August 2026 security release (v16.3.3 Active LTS)
to address GHSA-2xp9-vwfh-vxw4 and CVE-2026-75604.

Co-authored-by: bartzagr <bartzagr@gmail.com>
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Project Deployment Actions Updated (UTC)
loading-ui Ready Ready Preview Aug 29, 2026 2:18pm

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@Bartek532
Bartek532 marked this pull request as ready for review August 29, 2026 14:18
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Bartek532 merged commit bf7367a into main Aug 29, 2026
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@Bartek532
Bartek532 deleted the cursor/update-nextjs-security-4efe branch August 29, 2026 19:28
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2 participants