{"id":"CVE-2026-27980","aliases":["GHSA-3x4c-7xq6-9pq8"],"url":"https://o3.security/vulnerability/CVE-2026-27980","summary":"Next.js: Unbounded next/image disk cache growth can exhaust storage","details":"## Summary\nThe default Next.js image optimization disk cache (`/_next/image`) did not have a configurable upper bound, allowing unbounded cache growth.\n\n## Impact\nAn attacker could generate many unique image-optimization variants and exhaust disk space, causing denial of service. Note that this does not impact platforms that have their own image optimization capabilities, such as Vercel.\n\n## Patches\nFixed 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. \n\n## Workarounds\nIf upgrade is not immediately possible:\n- Periodically clean `.next/cache/images`.\n- Reduce variant cardinality (e.g., tighten values for `images.localPatterns`, `images.remotePatterns`, and `images.qualities`)","published":"2026-03-18T00:23:34.862Z","modified":"2026-08-12T03:51:32.530957800Z","cvss":null,"epss":{"score":0.00683,"percentile":0.50903,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"next","fixedVersion":"16.1.7"},{"ecosystem":"npm","name":"next","fixedVersion":"15.5.14"}],"fix":{"url":"https://github.com/vercel/next.js/commit/39eb8e0ac498b48855a0430fbf4c22276a73b4bd","label":"vercel/next.js@39eb8e0"},"references":[{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v16.1.7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27980.json"},{"type":"ADVISORY","url":"https://github.com/vercel/next.js/security/advisories/GHSA-3x4c-7xq6-9pq8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27980"},{"type":"FIX","url":"https://github.com/vercel/next.js/commit/39eb8e0ac498b48855a0430fbf4c22276a73b4bd"},{"type":"PACKAGE","url":"https://github.com/vercel/next.js"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:32.530957800Z"}}