{"schemaVersion":3,"id":"CVE-2025-49826","aliases":["GHSA-67rr-84xm-4c7r"],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2025-07-03T21:03:24.346Z","modified":"2025-07-08T14:33:21.671Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Npm","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01133,"percentile":0.65995,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.03800000000000001,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01095},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01133,"percentile":0.65995}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01095,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0112,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01133,"percentile":0.65995}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","description":"The product acts as an intermediary HTTP agent\n         (such as a proxy or firewall) in the data flow between two\n         entities such as a client and server, but it does not\n         interpret malformed HTTP requests or responses in ways that\n         are consistent with how the messages will be processed by\n         those entities that are at the ultimate destination.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/444.html"}],"affected":[{"vendor":"Npm","product":"next","name":"next","label":"next","ecosystem":"Npm","cpePart":null,"purl":"pkg:npm/next","purlType":"npm","versions":[{"text":"≥ 15.0.4-canary.51, < 15.1.8","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.0.4-canary.51, < 15.1.8","eol":{"isEol":null,"eolDate":null,"matchMethod":"purl","cycle":null,"product":{"name":"nextjs","label":"Next.js","category":"framework"}},"hubHref":null},{"vendor":"vercel","product":"next.js","name":"next.js","label":"next.js","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 15.0.4-canary.51, < 15.1.8","noFixRecorded":false,"fixedIn":null},{"text":"> 15.0.4, < 15.1.8","noFixRecorded":false,"fixedIn":null},{"text":"15.0.4:canary51","noFixRecorded":false,"fixedIn":null},{"text":"15.0.4:canary52","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.0.4-canary.51, < 15.1.8 | > 15.0.4, < 15.1.8 | 15.0.4:canary51 | 15.0.4:canary52","eol":null,"hubHref":"/vendor/vercel/nextjs"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r","label":"github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Vendor Advisory"]},{"url":"https://github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93","label":"github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch"]},{"url":"https://github.com/vercel/next.js/releases/tag/v15.1.8","label":"github.com/vercel/next.js/releases/tag/v15.1.8","hostname":"github.com","tags":["X Refsource MISC","WEB","Release Notes"]},{"url":"https://vercel.com/changelog/cve-2025-49826","label":"vercel.com/changelog/cve-2025-49826","hostname":"vercel.com","tags":["X Refsource MISC","WEB","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49826","label":"nvd.nist.gov/vuln/detail/CVE-2025-49826","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/vercel/next.js/commit/16bfce64ef2157f2c1dfedcfdb7771bc63103fd2","label":"github.com/vercel/next.js/commit/16bfce64ef2157f2c1dfedcfdb7771bc63103fd2","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/vercel/next.js","label":"github.com/vercel/next.js","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2025-07-03T21:03:24.346Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-07-08T14:33:21.671Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T05:26:29.689Z","stale":false,"partial":false}}