OneLogin Bug Let Attackers Use API Keys to Steal OIDC Secrets and Impersonate Apps
Oct 01, 2025
Vulnerability / API Security
A high-severity security flaw has been disclosed in the One Identity OneLogin Identity and Access Management (IAM) solution that, if successfully exploited, could expose sensitive OpenID Connect ( OIDC ) application client secrets under certain circumstances. The vulnerability, tracked as CVE-2025-59363 , has been assigned a CVSS score of 7.7 out of 10.0. It has been described as a case of incorrect resource transfer between spheres ( CWE-669 ), which causes a program to cross security boundaries and obtain unauthorized access to confidential data or functions. CVE-2025-59363 "allowed attackers with valid API credentials to enumerate and retrieve client secrets for all OIDC applications within an organization's OneLogin tenant," Clutch Security said in a report shared with The Hacker News. The identity security said the problem stems from the fact that the application listing endpoint – /api/2/apps – was configured to return more data than expected, including the ...