Next.jsに脆弱性（CVE-2026-94543）
概要
Next.jsに脆弱性が確認されました。
バージョン 15.0.0 以上 15.5.27 未満、16.0.0 以上 16.3.8 未満に影響があります。
修正版 15.5.27 / 16.3.8 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-94543 GHSA-4jqv-mc3x-m676 |
|---|---|
| 脆弱性の種類 | CWE-524 |
| 危険度 | 中 |
| CVSSスコア |
6.3（CVSS v4.0） CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| 公開日 | 2026年10月7日 |
影響を受ける製品
| 製品 | 影響を受けるバージョン | 修正版 | 出典 |
|---|---|---|---|
| Next.js |
15.0.0 以上 15.5.27 未満、16.0.0 以上 16.3.8 未満 | 15.5.27 / 16.3.8 | OSV.dev |
推奨対応
- Next.jsを、ご利用中の系列に対応する修正版（15.5.27 / 16.3.8）またはそれ以降の公式最新版へ更新してください。
情報元の原文
OSV.dev
Next.js has cache poisoning of SSG and ISR pages in self-hosted applications
Self-hosted Next.js applications that use the Pages Router with statically generated (SSG) or incrementally regenerated (ISR) pages can have a page's cache entry replaced with content from a different route, causing the affected page to serve wrong content to every visitor until the entry is revalidated. Applications deployed on Vercel are not affected.
利用条件：CC BY 4.0
出典: GitHub Advisory Database（OSV.dev 経由で取得）。原文のまま掲載（改変なし）
NVD（National Vulnerability Database / NIST）
Next.js is a React framework for building full-stack web applications. From 15.0.0 until 15.5.27 and 16.3.8, self-hosted applications using the Pages Router with statically generated or Incremental Static Regeneration pages can key a response cache entry without sufficiently binding it to the source route. A request can replace one page's cache entry with content from a different route, causing the affected page to serve incorrect content to every visitor until revalidation. Applications deployed on Vercel are not affected. This issue is fixed in versions 15.5.27 and 16.3.8.
利用条件：米国政府の著作物（パブリックドメイン）・原文のまま掲載
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
CVE List（CVE Program）
Next.js: Cache poisoning of SSG and ISR pages in self-hosted Next.js applications
Next.js is a React framework for building full-stack web applications. From 15.0.0 until 15.5.27 and 16.3.8, self-hosted applications using the Pages Router with statically generated or Incremental Static Regeneration pages can key a response cache entry without sufficiently binding it to the source route. A request can replace one page's cache entry with content from a different route, causing the affected page to serve incorrect content to every visitor until revalidation. Applications deployed on Vercel are not affected. This issue is fixed in versions 15.5.27 and 16.3.8.
利用条件：CVE の利用条件（CVE Terms of Use）・原文のまま掲載
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
情報元
- OSV.dev
https://github.com/advisories/GHSA-4jqv-mc3x-m676 - NVD（National Vulnerability Database / NIST）
https://nvd.nist.gov/vuln/detail/CVE-2026-94543 - CVE List（CVE Program）
https://www.cve.org/CVERecord?id=CVE-2026-94543