{"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":"2026-10-09T16:12:53.569Z"},"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)"}]},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-770","lang":"en","description":"CWE-770 Allocation of Resources Without Limits or Throttling"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-09T16:12:49.383383Z","id":"CVE-2026-78667","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-09T16:12:53.569Z"}}]}}