{"api_version":"1","generated_at":"2026-08-14T17:47:01+00:00","cve":"CVE-2026-56859","urls":{"html":"https://cve.report/CVE-2026-56859","api":"https://cve.report/api/cve/CVE-2026-56859.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-56859","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-56859"},"summary":{"title":"Add recursion depth guard during decode in encoding/xml","description":"Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion.","state":"PUBLISHED","assigner":"Go","published_at":"2026-08-13 22:17:22","updated_at":"2026-08-14 16:16:57"},"problem_types":["CWE-770","CWE-770: Allocation of Resources Without Limits or Throttling","CWE-770 CWE-770 Allocation of Resources Without Limits or Throttling"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","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","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","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","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://groups.google.com/g/golang-announce/c/94pEornpRlI","name":"https://groups.google.com/g/golang-announce/c/94pEornpRlI","refsource":"security@golang.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://go.dev/cl/803320","name":"https://go.dev/cl/803320","refsource":"security@golang.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://go.dev/issue/80481","name":"https://go.dev/issue/80481","refsource":"security@golang.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://pkg.go.dev/vuln/GO-2026-6088","name":"https://pkg.go.dev/vuln/GO-2026-6088","refsource":"security@golang.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-56859","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56859","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Go standard library","product":"encoding/xml","version":"affected 1.25.13 semver","platforms":[]},{"source":"CNA","vendor":"Go standard library","product":"encoding/xml","version":"affected 1.26.0-0 1.26.6 semver","platforms":[]},{"source":"CNA","vendor":"Go standard library","product":"encoding/xml","version":"affected 1.27.0-0 1.27.0-rc.3 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-56859","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-08-14T15:21:09.615961Z","version":"2.0.3"},"type":"ssvc"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-14T15:21:46.218Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"collectionURL":"https://pkg.go.dev","defaultStatus":"unaffected","packageName":"encoding/xml","product":"encoding/xml","programRoutines":[{"name":"Decoder.push"},{"name":"Decoder.pop"},{"name":"Decoder.RawToken"},{"name":"Decoder.unmarshalPath"},{"name":"Decoder.unmarshal"},{"name":"Decoder.Decode"},{"name":"Decoder.DecodeElement"},{"name":"Decoder.Skip"},{"name":"Decoder.Token"},{"name":"Unmarshal"}],"vendor":"Go standard library","versions":[{"lessThan":"1.25.13","status":"affected","version":"0","versionType":"semver"},{"lessThan":"1.26.6","status":"affected","version":"1.26.0-0","versionType":"semver"},{"lessThan":"1.27.0-rc.3","status":"affected","version":"1.27.0-0","versionType":"semver"}]}],"descriptions":[{"lang":"en","value":"Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion."}],"problemTypes":[{"descriptions":[{"description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en"}]}],"providerMetadata":{"dateUpdated":"2026-08-13T21:58:52.959Z","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","shortName":"Go"},"references":[{"url":"https://go.dev/issue/80481"},{"url":"https://go.dev/cl/803320"},{"url":"https://groups.google.com/g/golang-announce/c/94pEornpRlI"},{"url":"https://pkg.go.dev/vuln/GO-2026-6088"}],"title":"Add recursion depth guard during decode in encoding/xml"}},"cveMetadata":{"assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","assignerShortName":"Go","cveId":"CVE-2026-56859","datePublished":"2026-08-13T21:58:52.959Z","dateReserved":"2026-06-23T15:10:49.353Z","dateUpdated":"2026-08-14T15:21:46.218Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-13 22:17:22","lastModifiedDate":"2026-08-14 16:16:57","problem_types":["CWE-770","CWE-770: Allocation of Resources Without Limits or Throttling","CWE-770 CWE-770 Allocation of Resources Without Limits or Throttling"],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-14T15:21:09.615961Z","id":"CVE-2026-56859","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"56859","Ordinal":"1","Title":"Add recursion depth guard during decode in encoding/xml","CVE":"CVE-2026-56859","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"56859","Ordinal":"1","NoteData":"Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion.","Type":"Description","Title":"Add recursion depth guard during decode in encoding/xml"}]}}}