Vulnerability Description
Next.js is a React framework for building full-stack web applications. Starting in version 10.0.0 and prior to version 16.1.7, the default Next.js image optimization disk cache (`/_next/image`) did not have a configurable upper bound, allowing unbounded cache growth. An attacker could generate many unique image-optimization variants and exhaust disk space, causing denial of service. This is fixed in version 16.1.7 by adding an LRU-backed disk cache with `images.maximumDiskCacheSize`, including eviction of least-recently-used entries when the limit is exceeded. Setting `maximumDiskCacheSize: 0` disables disk caching. If upgrading is not immediately possible, periodically clean `.next/cache/images` and/or reduce variant cardinality (e.g., tighten values for `images.localPatterns`, `images.remotePatterns`, and `images.qualities`).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vercel | Next.Js | >= 10.0.0, < 16.1.7 |
Related Weaknesses (CWE)
References
- https://github.com/vercel/next.js/commit/39eb8e0ac498b48855a0430fbf4c22276a73b4bPatch
- https://github.com/vercel/next.js/releases/tag/v16.1.7Release Notes
- https://github.com/vercel/next.js/security/advisories/GHSA-3x4c-7xq6-9pq8Vendor AdvisoryMitigation
FAQ
What is CVE-2026-27980?
CVE-2026-27980 is a vulnerability with a CVSS score of 7.5 (HIGH). Next.js is a React framework for building full-stack web applications. Starting in version 10.0.0 and prior to version 16.1.7, the default Next.js image optimization disk cache (`/_next/image`) did no...
How severe is CVE-2026-27980?
CVE-2026-27980 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-27980?
Check the references section above for vendor advisories and patch information. Affected products include: Vercel Next.Js.