CVE-2026-94484Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service
Updated under an hour ago ()
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It affects vercel next.js. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.3 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-524
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
vercel next.js vercel:next.js (from the name) | from 15.0.0, < 15.5.27; from 16.0.0, < 16.3.8 | CNA record |
vercel next.js vercel:next.js | from 15.0.0 before 15.5.27; from 16.0.0 before 16.3.8 | NVD |
References
- https://github.com/vercel/next.js/security/advisories/GHSA-mcj8-r9mp-w47px-refsource-confirm, vendor-advisory
- https://github.com/vercel/next.js/commit/52c94abdd2ea5f416f5e8353ea8a2edd3fe311b8x-refsource-misc, patch
- https://github.com/vercel/next.js/commit/719e4c67d6e92df60246f95e1d96e2dd60789a52x-refsource-misc, patch
- https://github.com/vercel/next.js/releases/tag/v15.5.27x-refsource-misc, release-notes
- https://github.com/vercel/next.js/releases/tag/v16.3.8x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.