CVE-2025-34063: One Identity Onelogin Active Directory Connector ADC

Critical severity, CVSS 10.0. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• One Identity Onelogin Active Directory Connector ADC: before 6.1.5 (fixed in 6.1.5)

Published 2025-07-01. Last modified 2026-06-17.