{"id":"CVE-2026-56852","state":"PUBLISHED","title":"Infinite loop on invalid input in golang.org/x/text","description":"A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.","publishedAt":"2026-07-21T19:18:59.951Z","updatedAt":"2026-08-10T22:57:54.703Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Go","products":["golang.org/x/text golang.org/x/text/unicode/norm"],"affected":[{"vendor":"golang.org/x/text","product":"golang.org/x/text/unicode/norm","packageName":"golang.org/x/text/unicode/norm","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.39.0","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"nextComposed"},{"name":"Form.Append"},{"name":"Form.AppendString"},{"name":"Form.Bytes"},{"name":"Form.FirstBoundary"},{"name":"Form.FirstBoundaryInString"},{"name":"Form.IsNormal"},{"name":"Form.IsNormalString"},{"name":"Form.LastBoundary"},{"name":"Form.NextBoundary"},{"name":"Form.NextBoundaryInString"},{"name":"Form.Properties"},{"name":"Form.PropertiesString"},{"name":"Form.QuickSpan"},{"name":"Form.QuickSpanString"},{"name":"Form.Span"},{"name":"Form.SpanString"},{"name":"Form.String"},{"name":"Form.Transform"},{"name":"Iter.Init"},{"name":"Iter.InitString"},{"name":"Iter.Next"},{"name":"Iter.Seek"},{"name":"normReader.Read"},{"name":"normWriter.Write"}]}],"references":["https://go.dev/issue/80142","https://go.dev/cl/794100","https://pkg.go.dev/vuln/GO-2026-5970"],"weaknesses":["CWE-835"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56852.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56852","state":"PUBLISHED","datePublished":"2026-07-21T19:18:59.951Z","dateUpdated":"2026-08-10T22:57:54.703Z","assignerShortName":"Go","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateReserved":"2026-06-23T15:10:49.352Z"},"containers":{"cna":{"title":"Infinite loop on invalid input in golang.org/x/text","descriptions":[{"lang":"en","value":"A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes."}],"affected":[{"vendor":"golang.org/x/text","product":"golang.org/x/text/unicode/norm","packageName":"golang.org/x/text/unicode/norm","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.39.0","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"nextComposed"},{"name":"Form.Append"},{"name":"Form.AppendString"},{"name":"Form.Bytes"},{"name":"Form.FirstBoundary"},{"name":"Form.FirstBoundaryInString"},{"name":"Form.IsNormal"},{"name":"Form.IsNormalString"},{"name":"Form.LastBoundary"},{"name":"Form.NextBoundary"},{"name":"Form.NextBoundaryInString"},{"name":"Form.Properties"},{"name":"Form.PropertiesString"},{"name":"Form.QuickSpan"},{"name":"Form.QuickSpanString"},{"name":"Form.Span"},{"name":"Form.SpanString"},{"name":"Form.String"},{"name":"Form.Transform"},{"name":"Iter.Init"},{"name":"Iter.InitString"},{"name":"Iter.Next"},{"name":"Iter.Seek"},{"name":"normReader.Read"},{"name":"normWriter.Write"}]}],"references":[{"url":"https://go.dev/issue/80142"},{"url":"https://go.dev/cl/794100"},{"url":"https://pkg.go.dev/vuln/GO-2026-5970"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')"}]}],"providerMetadata":{"shortName":"Go","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateUpdated":"2026-08-10T22:57:54.703Z"},"credits":[{"lang":"en","value":"Viky Choi (\"vikychoi\" on GitHub)"}]},"adp":[{"title":"CISA ADP Vulnrichment","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":"2026-07-23T13:26:14.918983Z","id":"CVE-2026-56852","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-835","type":"CWE","lang":"en","description":"CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-23T13:26:20.232Z"}}]}}}