{"id":"CVE-2025-34063","state":"PUBLISHED","title":"OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key","description":"A cryptographic authentication bypass vulnerability exists in OneLogin AD Connector prior to 6.1.5 due to the exposure of a tenant’s SSO JWT signing key via the /api/adc/v4/configuration endpoint. An attacker in possession of the signing key can craft valid JWT tokens impersonating arbitrary users within a OneLogin tenant. The tokens allow authentication to the OneLogin SSO portal and all downstream applications federated via SAML or OIDC. This allows full unauthorized access across the victim’s SaaS environment.","publishedAt":"2025-07-01T14:49:25.544Z","updatedAt":"2025-07-01T15:17:11.538Z","severity":{"score":10,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","source":"VulnCheck"},"assigner":"VulnCheck","products":["One Identity OneLogin Active Directory Connector (ADC)"],"affected":[{"vendor":"One Identity","product":"OneLogin Active Directory Connector (ADC)","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.1.5","versionType":"semver"}],"modules":["JWT signing logic within ConnectorService.exe and SSO JWT consumer endpoint (/trust/onelogin-sso/jwt)","Signed JWT crafted with leaked signing_key"]}],"references":["https://support.onelogin.com/product-notification/noti-00001768","https://specterops.io/blog/2025/06/10/onelogin-many-issues-how-i-pivoted-from-a-trial-tenant-to-compromising-customer-signing-keys/","https://vulncheck.com/advisories/onelogin-ad-connector-account-compromise"],"weaknesses":["CWE-290"],"ingestedAt":"2026-10-29T20:09:03.054Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/34xxx/CVE-2025-34063.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-34063","state":"PUBLISHED","datePublished":"2025-07-01T14:49:25.544Z","dateUpdated":"2025-07-01T15:17:11.538Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2025-04-15T19:15:22.549Z"},"containers":{"cna":{"title":"OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key","descriptions":[{"lang":"en","value":"A cryptographic authentication bypass vulnerability exists in OneLogin AD Connector prior to 6.1.5 due to the exposure of a tenant’s SSO JWT signing key via the /api/adc/v4/configuration endpoint. 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