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.
History

Tue, 01 Jul 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 01 Jul 2025 15:00:00 +0000

Type Values Removed Values Added
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.
Title OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key
Weaknesses CWE-290
References
Metrics cvssV4_0

{'score': 10, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2025-07-01T14:49:25.544Z

Updated: 2025-07-01T15:17:11.538Z

Reserved: 2025-04-15T19:15:22.549Z

Link: CVE-2025-34063

cve-icon Vulnrichment

Updated: 2025-07-01T15:16:56.630Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-07-01T15:15:24.913

Modified: 2025-07-03T15:14:12.767

Link: CVE-2025-34063

cve-icon Redhat

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