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CVE-2026-27980

CVE-2026-27980 · Next.js: Unbounded next/image disk cache growth can exhaust storage

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 6.9 · Medium · EPSS 0.9% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • next.js

    Versions
    • >= 10.0.0, < 16.1.7: Affected

    No fix published

  • next npm

    Affected ranges
    • SEMVER: ≥ 16.0.0-beta.0, < 16.1.7

    Update to 16.1.7

  • next npm

    Affected ranges
    • SEMVER: ≥ 10.0.0, < 15.5.14

    Update to 15.5.14

Original sources

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