{"api_version":"1","generated_at":"2026-05-28T16:29:35+00:00","cve":"CVE-2026-46597","urls":{"html":"https://cve.report/CVE-2026-46597","api":"https://cve.report/api/cve/CVE-2026-46597.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46597","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46597"},"summary":{"title":"Invoking  byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh","description":"An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.","state":"PUBLISHED","assigner":"Go","published_at":"2026-05-22 04:16:26","updated_at":"2026-05-28 14:44:17"},"problem_types":["CWE-704","CWE-191: Integer Underflow (Wrap or Wraparound)"],"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/a082jnz-LvI","name":"https://groups.google.com/g/golang-announce/c/a082jnz-LvI","refsource":"security@golang.org","tags":["Mailing List"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://go.dev/cl/781620","name":"https://go.dev/cl/781620","refsource":"security@golang.org","tags":["Issue Tracking"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://pkg.go.dev/vuln/GO-2026-5013","name":"https://pkg.go.dev/vuln/GO-2026-5013","refsource":"security@golang.org","tags":["Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://go.dev/issue/79561","name":"https://go.dev/issue/79561","refsource":"security@golang.org","tags":["Issue Tracking"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46597","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46597","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"golang.org/x/crypto","product":"golang.org/x/crypto/ssh","version":"affected 0.52.0 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Maciej Kawka","lang":"en"}],"nvd_cpes":[{"cve_year":"2026","cve_id":"46597","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"golang","cpe5":"crypto","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"go","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46597","cve":"CVE-2026-46597","epss":"0.000420000","percentile":"0.128120000","score_date":"2026-05-27","updated_at":"2026-05-28 00:02:13"},"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-2026-46597","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-05-22T14:08:24.589026Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-05-22T14:08:27.674Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"collectionURL":"https://pkg.go.dev","defaultStatus":"unaffected","packageName":"golang.org/x/crypto/ssh","product":"golang.org/x/crypto/ssh","programRoutines":[{"name":"gcmCipher.readCipherPacket"},{"name":"Dial"},{"name":"NewClientConn"},{"name":"NewServerConn"},{"name":"curve25519sha256.Client"},{"name":"curve25519sha256.Server"},{"name":"dhGEXSHA.Client"},{"name":"dhGEXSHA.Server"},{"name":"dhGroup.Client"},{"name":"dhGroup.Server"},{"name":"ecdh.Client"},{"name":"ecdh.Server"},{"name":"mlkem768WithCurve25519sha256.Client"},{"name":"mlkem768WithCurve25519sha256.Server"}],"vendor":"golang.org/x/crypto","versions":[{"lessThan":"0.52.0","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","value":"Maciej Kawka"}],"descriptions":[{"lang":"en","value":"An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs."}],"problemTypes":[{"descriptions":[{"description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en"}]}],"providerMetadata":{"dateUpdated":"2026-05-22T02:31:26.754Z","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","shortName":"Go"},"references":[{"url":"https://go.dev/issue/79561"},{"url":"https://groups.google.com/g/golang-announce/c/a082jnz-LvI"},{"url":"https://go.dev/cl/781620"},{"url":"https://pkg.go.dev/vuln/GO-2026-5013"}],"title":"Invoking  byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh"}},"cveMetadata":{"assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","assignerShortName":"Go","cveId":"CVE-2026-46597","datePublished":"2026-05-22T02:31:26.754Z","dateReserved":"2026-05-15T17:35:00.813Z","dateUpdated":"2026-05-22T14:08:27.674Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-22 04:16:26","lastModifiedDate":"2026-05-28 14:44:17","problem_types":["CWE-704","CWE-191: Integer Underflow (Wrap or Wraparound)"],"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}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*","versionEndExcluding":"0.52.0","matchCriteriaId":"D540395B-31B8-4B07-8F79-F5C631BBD5C8"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46597","Ordinal":"1","Title":"Invoking  byte arithmetic causes underflow and panic in golang.o","CVE":"CVE-2026-46597","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46597","Ordinal":"1","NoteData":"An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.","Type":"Description","Title":"Invoking  byte arithmetic causes underflow and panic in golang.o"}]}}}