CVE-2025-34063CWE-290

OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key

Critical · published July 1, 2025

CVSS v4.0
10.0
EPSS
1%
Percentile
48.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
10.0 · CRITICAL
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
EPSS
0.00612 · 48.6th percentile
Weakness
CWE-290 · Authentication Bypass by Spoofing
Published
2025-07-01T14:49Z
EPSS history
Timeline
  • 01 JUL 14:49Z
    OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key
    cvelistv5