{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78667", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-08-24T23:36:15.738Z", "datePublished": "2026-10-08T22:53:59.148Z", "dateUpdated": "2026-10-08T22:53:59.148Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-10-08T22:53:59.148Z"}, "title": "Lack of limit on size of parsed Range headers in net/http", "descriptions": [{"lang": "en", "value": "When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU."}], "affected": [{"vendor": "Go standard library", "product": "net/http", "collectionURL": "https://pkg.go.dev", "packageName": "net/http", "versions": [{"version": "0", "lessThan": "1.26.9", "status": "affected", "versionType": "semver"}, {"version": "1.27.0-0", "lessThan": "1.27.2", "status": "affected", "versionType": "semver"}], "programRoutines": [{"name": "parseRange"}, {"name": "ServeContent"}, {"name": "ServeFile"}, {"name": "ServeFileFS"}, {"name": "fileHandler.ServeHTTP"}, {"name": "fileTransport.RoundTrip"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling"}]}], "references": [{"url": "https://go.dev/cl/847309"}, {"url": "https://go.dev/issue/81858"}, {"url": "https://groups.google.com/g/golang-announce/c/U2fTuyDJznI"}, {"url": "https://pkg.go.dev/vuln/GO-2026-6609"}], "credits": [{"lang": "en", "value": "Jakub Ciolek (https://ciolek.dev)"}]}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://pkg.go.dev", "defaultStatus": "unaffected", "packageName": "net/http", "product": "net/http", "programRoutines": [{"name": "parseRange"}, {"name": "ServeContent"}, {"name": "ServeFile"}, {"name": "ServeFileFS"}, {"name": "fileHandler.ServeHTTP"}, {"name": "fileTransport.RoundTrip"}], "vendor": "Go standard library", "versions": [{"lessThan": "1.26.9", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "1.27.2", "status": "affected", "version": "1.27.0-0", "versionType": "semver"}]}], "source": "security@golang.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU."}], "id": "CVE-2026-78667", "lastModified": "2026-10-08T23:17:03.880", "metrics": {}, "published": "2026-10-08T23:17:03.880", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/847309"}, {"source": "security@golang.org", "url": "https://go.dev/issue/81858"}, {"source": "security@golang.org", "url": "https://groups.google.com/g/golang-announce/c/U2fTuyDJznI"}, {"source": "security@golang.org", "url": "https://pkg.go.dev/vuln/GO-2026-6609"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Received"}

{}

{}