CVE-2026-94484
mediumNext.js is a React framework for building full-stack web applications.
Vendor / product: Vercel — next.js
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/vercel/next.js/commit/52c94abdd2ea5f416f5e8353ea8a2edd3fe311b8 security-advisories@github.com
- https://github.com/vercel/next.js/commit/719e4c67d6e92df60246f95e1d96e2dd60789a52 security-advisories@github.com
- https://github.com/vercel/next.js/releases/tag/v15.5.27 security-advisories@github.com
- https://github.com/vercel/next.js/releases/tag/v16.3.8 security-advisories@github.com
- https://github.com/vercel/next.js/security/advisories/GHSA-mcj8-r9mp-w47p security-advisories@github.com