{"id":"GHSA-mg66-mrh9-m8jx","revision":"bc250b30ac634fe8aa495c0dff3605c6","records":[{"revision":"bc250b30ac634fe8aa495c0dff3605c6","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-mg66-mrh9-m8jx","aliases":["CVE-2026-44579"],"title":"Next.js vulnerable to Denial of Service via connection exhaustion in applications using Cache Components","description":"### Impact\n\nApplications using Partial Prerendering through the Cache Components feature can be vulnerable to connection exhaustion through crafted POST requests to a server action. In affected configurations, a malicious request can trigger a request-body handling deadlock that leaves connections open for an extended period, consuming file descriptors and server capacity until legitimate users are denied service.\n\n### Fix\n\nWe now treat the header used for resuming Partial Prerendered requests as an internal-only header and strip it from untrusted incoming requests. This header should never be accepted directly from external clients.\n\n### Workarounds\n\nIf you cannot upgrade immediately, block requests that would be handled by Next.js if they contain the `Next-Resume` header at the edge.","state":0,"publishedAt":"2026-05-11T15:56:24+00:00","modifiedAt":"2026-09-10T03:51:06.38907+00:00","affected":[{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"15.0.0"},{"kind":"fixed","version":"15.5.16"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"16.0.0"},{"kind":"fixed","version":"16.2.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-mg66-mrh9-m8jx","https://nvd.nist.gov/vuln/detail/CVE-2026-44579","https://github.com/vercel/next.js","https://github.com/vercel/next.js/releases/tag/v15.5.16","https://github.com/vercel/next.js/releases/tag/v16.2.5"],"sourceUrl":"https://github.com/advisories/GHSA-mg66-mrh9-m8jx","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-mg66-mrh9-m8jx","identifiers":["GHSA-mg66-mrh9-m8jx","CVE-2026-44579"]},"retained":false,"historicalAffected":[]}],"coverage":[]}