{"cve":"CVE-2025-49826","nvd":{"published":"2025-07-03T21:15:27.287","modified":"2026-06-17T09:31:57.767","status":"Analyzed","description":"Next.js is a React framework for building full-stack web applications. From versions 15.0.4-canary.51 to before 15.1.8, a cache poisoning bug leading to a Denial of Service (DoS) condition was found in Next.js. This issue does not impact customers hosted on Vercel. Under certain conditions, this issue may allow a HTTP 204 response to be cached for static pages, leading to the 204 response being served to all users attempting to access the page. This issue has been addressed in version 15.1.8.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-444"],"references":["https://github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93","https://github.com/vercel/next.js/releases/tag/v15.1.8","https://github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r","https://vercel.com/changelog/cve-2025-49826"],"products":["vercel:next.js"],"source":"nvd","synced_at":"2026-10-19T22:04:28.436527499+00:00"},"epss":{"cve":"CVE-2025-49826","score":0.01133,"percentile":0.66474,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-67rr-84xm-4c7r","url":"https://osv.dev/vulnerability/GHSA-67rr-84xm-4c7r","summary":"Next.JS vulnerability can lead to DoS via cache poisoning ","modified":"2025-07-03T21:49:52Z","packages":[{"ecosystem":"npm","name":"next","purl":"pkg:npm/next","ranges":[">=15.0.4-canary.51 <15.1.8"],"fixed":["15.1.8"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}