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CVE-2026-94484— Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service

Quick assessment

Affected
vercel next.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Next.js 是一个用于构建全栈 Web 应用的 React 框架。在版本 15.0.0 至 15.5.26 以及 16.3.7 及以下版本中，如果应用包含根层级的通配符页面（catch-all page），并采用了静态生成（Static Generation）或增量静态再生（Incremental Static Regeneration, ISR）的路由策略，则可能使用一个作用域不够严格的共享响应缓存键。攻击者可通过构造单个未认证的请求对该缓存进行投毒（cache poisoning），从而导致跨用户的内容替换

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
vercel next.js >= 15.0.0, < 15.5.27 affected
>= 16.0.0, < 16.3.8 affected
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I. Basic Information for CVE-2026-94484

Vulnerability Information
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Vulnerability Title
Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
Next.js is a React framework for building full-stack web applications. From 15.0.0 until 15.5.27 and 16.3.8, applications with a root-level catch-all page and statically generated or Incremental Static Regeneration routes can use a shared response cache key that is insufficiently scoped to the source route. A single unauthenticated crafted request can poison that cache, causing cross-user content substitution or persistent denial of service until the poisoned entry is revalidated or replaced. This issue is fixed in versions 15.5.27 and 16.3.8.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过缓存导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
vercel next.js >= 15.0.0, < 15.5.27 -

II. Public POCs for CVE-2026-94484

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III. Intelligence Information for CVE-2026-94484

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Vendor Advisories for CVE-2026-94484 (1)

Vendor Pages for CVE-2026-94484 (2)

Other References for CVE-2026-94484 (1)

Same Patch Batch · vercel · 2026-10-02 · 6 CVEs total

CVE-2026-94483 8.3 HIGH Next.js: Server-Side Request Forgery in Image Optimization
CVE-2026-94485 6.3 MEDIUM Next.js: Information disclosure in Next.js App Router metadata image routes via dynamicPar
CVE-2026-94544 6.3 MEDIUM Next.js: Pending `use cache` fill can leak Draft Mode content into regular responses and p
CVE-2026-94543 6.3 MEDIUM Next.js: Cache poisoning of SSG and ISR pages in self-hosted Next.js applications
CVE-2026-94486 2.3 LOW Next.js: Information disclosure in the Next.js development server's Model Context Protocol

IV. Related Vulnerabilities

Same product: next.js
Same vendor: vercel
Same weakness: CWE-524

V. Comments for CVE-2026-94484

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