chore(deps): update nextjs monorepo to v15.5.20

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
eslint-config-next (source)	15.5.12 → 15.5.20
next (source)	15.5.12 → 15.5.20

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Release Notes

vercel/next.js (eslint-config-next)

v15.5.20

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Contains no changes except publishing @next/swc-wasm-web which was accidentally not published since 15.5.15.

v15.5.19: 15.5.19

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[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• [15.5.x] Don't drop FormData entries (#​94244)

Other

• [15.5.x] Fix CI (#​94281)

Credits

Huge thanks to @​eps1lon for helping!

v15.5.18

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This release contains security fixes for the following advisories:

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

v15.5.16

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This release contains security fixes for the following advisories:

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
• 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

v15.5.15

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Please refer the following changelogs for more information about this security release:

https://vercel.com/changelog/summary-of-cve-2026-23869

v15.5.14

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[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• feat(next/image): add lru disk cache and images.maximumDiskCacheSize (#​91660)
• Fix(pages-router): restore Content-Length and ETag for /_next/data/ JSON responses (#​90304)

Credits

Huge thanks to @​styfle and @​lllomh for helping!

v15.5.13

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[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• fix: patch http-proxy to prevent request smuggling in rewrites (See: CVE-2026-29057)

Credits

Huge thanks to @​ztanner for helping!

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	next@​15.5.12 ⏵ 15.5.20		+75	+1
	eslint-config-next@​15.5.12 ⏵ 15.5.20

View full report