{"id":"CVE-2026-15617","state":"PUBLISHED","title":"Principal/domain lookup without case normalization","description":"Logto performs principal lookup without normalizing email and identifier strings, enabling principal collision and unauthorized account access via case- or Unicode-different identities.","publishedAt":"2026-07-23T15:41:29.123Z","updatedAt":"2026-07-27T15:33:20.686Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"certcc","products":["Logto Logto"],"affected":[{"vendor":"Logto","product":"Logto","versions":[{"version":"1.10.1","status":"affected","lessThanOrEqual":"1.37.1","versionType":"custom"}]}],"references":["https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/libraries/verification-helpers/single-sign-on-guard.ts#L23-L33"],"weaknesses":["CWE-178"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/15xxx/CVE-2026-15617.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-15617","state":"PUBLISHED","datePublished":"2026-07-23T15:41:29.123Z","dateUpdated":"2026-07-27T15:33:20.686Z","assignerShortName":"certcc","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateReserved":"2026-07-13T16:14:46.769Z"},"containers":{"cna":{"title":"Principal/domain lookup without case normalization","descriptions":[{"lang":"en","value":"Logto performs principal lookup without normalizing email and identifier strings, enabling principal collision and unauthorized account access via case- or Unicode-different identities."}],"affected":[{"vendor":"Logto","product":"Logto","versions":[{"version":"1.10.1","status":"affected","lessThanOrEqual":"1.37.1","versionType":"custom"}]}],"references":[{"url":"https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/libraries/verification-helpers/single-sign-on-guard.ts#L23-L33"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-178 Improper Handling of Case Sensitivity"}]}],"providerMetadata":{"shortName":"certcc","orgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateUpdated":"2026-07-23T15:41:29.123Z"},"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"VINCE 3.0.43","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-15617"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-27T15:32:31.699310Z","id":"CVE-2026-15617","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-178","type":"CWE","lang":"en","description":"CWE-178 Improper Handling of Case Sensitivity"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-27T15:33:20.686Z"}}]}}}