OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-290.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| One Identity | OneLogin Active Directory Connector (ADC) | before 6.1.5 | 6.1.5 | Patch available | CNA |
- OneLogin Active Directory Connector (ADC) VendorOne Identity Affected before 6.1.5 Fixed in 6.1.5 Patch available CNA
Remediation
- Fix · CNA OneLogin Active Directory Connector (ADC) (One Identity) Fixed in 6.1.5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
One Identity OneLogin Active Directory Connector (ADC) — support.onelogin.com/product-notification/noti-00001768
3 records Highest priority Priority HIGH 2 HIGH, 1 LOW
Other records, highest priority first
- TI-2025-24232 OneLogin AD Connector Log S3 Bucket Hijack Leading to Cross-Tenant Data LeakagePriority HIGH 78
- TI-2025-24230 OneLogin AD Connector API Credential and Signing Key ExposurePriority LOW 31
Timeline
- 2026-10-02 Threatist record created from CVE-2025-34063
- 2026-10-03 Alias added: GHSA-g2mv-fq56-3w42
References
More One Identity vulnerabilities
- TI-2025-24232 OneLogin AD Connector Log S3 Bucket Hijack Leading to Cross-Tenant Data Leakage CVSS 4.0CRITICAL 9.0
- TI-2023-28400 One Identity Password Manager before 5.13.1 allows Kiosk Escape. CVSS 3.1HIGH 8.8
- TI-2024-31899 tranport: TLS host name wildcard matching too lax CVSS 3.1HIGH 7.5
- TI-2025-20397 The Secure Password extension in One Identity Password Manager before 5.14.4 allows local… CVSS 3.1HIGH 7.6
- TI-2025-32958 SQL injection in OneLogin CVSS 3.1MEDIUM 4.0
- TI-2024-37336 In One Identity Identity Manager 9.x before 9.3, an insecure direct object reference… CVSS 3.1CRITICAL 9.9
Sources
- CVE-2025-34063 · CVE Program
- CVE-2025-34063 · NVD
- FIRST EPSS
- GHSA-g2mv-fq56-3w42 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences