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

> CVE-2026-94484: Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service. CVSS 4.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-94484
Last updated: 2026-10-05T20:17:28Z

- Published: 2026-10-02 15:26 UTC · Updated: 2026-10-05 20:17 UTC · Assigner: GitHub\_M
- CVSS: 4.8 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
- EPSS: 0.24%, 15th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-524

## 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.

## Affected vendors and products

- vercel: next.js

## Tracked companies

- [Vercel](https://rewindex.com/company/vercel.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-94484)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-94484)
- [https://github.com/vercel/next.js/commit/52c94abdd2ea5f416f5e8353ea8a2edd3fe311b8](https://github.com/vercel/next.js/commit/52c94abdd2ea5f416f5e8353ea8a2edd3fe311b8)
- [https://github.com/vercel/next.js/commit/719e4c67d6e92df60246f95e1d96e2dd60789a52](https://github.com/vercel/next.js/commit/719e4c67d6e92df60246f95e1d96e2dd60789a52)
- [https://github.com/vercel/next.js/releases/tag/v15.5.27](https://github.com/vercel/next.js/releases/tag/v15.5.27)
- [https://github.com/vercel/next.js/releases/tag/v16.3.8](https://github.com/vercel/next.js/releases/tag/v16.3.8)
- [https://github.com/vercel/next.js/security/advisories/GHSA-mcj8-r9mp-w47p](https://github.com/vercel/next.js/security/advisories/GHSA-mcj8-r9mp-w47p)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-94484 · Markdown: https://rewindex.com/cve/CVE-2026-94484.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-94484 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:41.446Z