chore: upgrade next to ^16.2.6 to address CVE-2026-45109

[brendan-kellam]

Fixes SOU-1102

Summary

Upgrades Next.js from ^16.2.3 to ^16.2.6 to address CVE-2026-45109, which is an incomplete fix follow-up to CVE-2026-44575.

CVE Details

CVE-2026-45109: Next.js Turbopack middleware bypass via segment-prefetch routes (incomplete fix for CVE-2026-44575)

The fix for CVE-2026-44575 (Next.js App Router middleware bypass via segment-prefetch routes) did not apply to middleware.ts when using Turbopack. Applications using Turbopack with middleware remain vulnerable to the same App Router segment-prefetch authorization bypass even after upgrading to 16.2.5.

References

• GHSA-26hh-7cqf-hhc6
• GHSA-267c-6grr-h53f
• Release v16.2.6

Linear Issue: SOU-1102

  

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 627fb723-1712-45d8-b5c1-973d192ffc78

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cursor/cve/next-b42c

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[github-actions]

License Audit

⚠️ Status: PASS

Metric	Count
Total packages	2077
Resolved (non-standard)	11
Unresolved	0
Strong copyleft	0
Weak copyleft	39

Weak Copyleft Packages (informational)

Package	Version	License
@img/sharp-libvips-darwin-arm64	1.0.4	LGPL-3.0-or-later
@img/sharp-libvips-darwin-arm64	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-darwin-x64	1.0.4	LGPL-3.0-or-later
@img/sharp-libvips-darwin-x64	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-arm	1.0.5	LGPL-3.0-or-later
@img/sharp-libvips-linux-arm	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-arm64	1.0.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-arm64	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-ppc64	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-riscv64	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-s390x	1.0.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-s390x	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-x64	1.0.4	LGPL-3.0-or-later
@img/sharp-libvips-linux-x64	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linuxmusl-arm64	1.0.4	LGPL-3.0-or-later
@img/sharp-libvips-linuxmusl-arm64	1.2.4	LGPL-3.0-or-later
@img/sharp-libvips-linuxmusl-x64	1.0.4	LGPL-3.0-or-later
@img/sharp-libvips-linuxmusl-x64	1.2.4	LGPL-3.0-or-later
@img/sharp-wasm32	0.33.5	Apache-2.0 AND LGPL-3.0-or-later AND MIT
@img/sharp-wasm32	0.34.5	Apache-2.0 AND LGPL-3.0-or-later AND MIT
@img/sharp-win32-arm64	0.34.5	Apache-2.0 AND LGPL-3.0-or-later
@img/sharp-win32-ia32	0.33.5	Apache-2.0 AND LGPL-3.0-or-later
@img/sharp-win32-ia32	0.34.5	Apache-2.0 AND LGPL-3.0-or-later
@img/sharp-win32-x64	0.33.5	Apache-2.0 AND LGPL-3.0-or-later
@img/sharp-win32-x64	0.34.5	Apache-2.0 AND LGPL-3.0-or-later
axe-core	4.10.3	MPL-2.0
dompurify	3.4.0	(MPL-2.0 OR Apache-2.0)
lightningcss	1.32.0	MPL-2.0
lightningcss-android-arm64	1.32.0	MPL-2.0
lightningcss-darwin-arm64	1.32.0	MPL-2.0
lightningcss-darwin-x64	1.32.0	MPL-2.0
lightningcss-freebsd-x64	1.32.0	MPL-2.0
lightningcss-linux-arm-gnueabihf	1.32.0	MPL-2.0
lightningcss-linux-arm64-gnu	1.32.0	MPL-2.0
lightningcss-linux-arm64-musl	1.32.0	MPL-2.0
lightningcss-linux-x64-gnu	1.32.0	MPL-2.0
lightningcss-linux-x64-musl	1.32.0	MPL-2.0
lightningcss-win32-arm64-msvc	1.32.0	MPL-2.0
lightningcss-win32-x64-msvc	1.32.0	MPL-2.0

Resolved Packages (11)

Package	Version	Original	Resolved	Source
@react-grab/cli	0.1.23	UNKNOWN	MIT	GitHub repo aidenybai/react-grab (monorepo containing @react-grab/cli)
@react-grab/cli	0.1.29	UNKNOWN	MIT	GitHub repo aidenybai/react-grab (monorepo containing @react-grab/cli)
@react-grab/mcp	0.1.29	UNKNOWN	MIT	GitHub repo aidenybai/react-grab (monorepo containing @react-grab/mcp)
codemirror-lang-elixir	4.0.0	UNKNOWN	Apache-2.0	GitHub repo livebook-dev/codemirror-lang-elixir LICENSE file
element-source	0.0.3	UNKNOWN	MIT	GitHub repo aidenybai/element-source (npm package maintained by aidenybai)
lezer-elixir	1.1.2	UNKNOWN	Apache-2.0	GitHub repo livebook-dev/lezer-elixir LICENSE file
map-stream	0.1.0	UNKNOWN	MIT	GitHub repo dominictarr/map-stream LICENSE file
memorystream	0.3.1	UNKNOWN	MIT	Extracted from npm registry 'licenses' field object: {type: 'MIT', url: '...'}
pause-stream	0.0.11	["MIT","Apache2"]	MIT OR Apache-2.0	Extracted from package.json license array; confirmed by GitHub repo dominictarr/pause-stream LICENSE file ('Dual Licensed MIT and Apache 2')
posthog-js	1.369.0	SEE LICENSE IN LICENSE	Apache-2.0	GitHub repo PostHog/posthog-js LICENSE file (Apache License, Version 2.0)
valid-url	1.0.9	UNKNOWN	MIT	GitHub repo ogt/valid-url LICENSE file