CVE-2025-34064

Critical

Description

A cloud infrastructure misconfiguration in OneLogin AD Connector results in log data being sent to a hardcoded S3 bucket (onelogin-adc-logs-production) without validating bucket ownership. An attacker who registers this unclaimed bucket can begin receiving log files from other OneLogin tenants. These logs may contain sensitive data such as directory tokens, user metadata, and environment configuration. This enables cross-tenant leakage of secrets, potentially allowing JWT signing key recovery and user impersonation.

SeverityCritical

CVSS9.0

Exploit probability—

ProductOneLogin Active Directory Connector (ADC)

PublishedJul 1, 2025

First seenJul 1, 2025

Weakness typeCWE-668CWE-668 CWE-200Sensitive information exposure

How to fix

Update

One Identity OneLogin Active Directory Connector (ADC)6.1.5 or later

Patches

support.onelogin.com/product-notification/noti-00001768

Affected products

Product	Affected versions	Fixed in
One Identity OneLogin Active Directory Connector (ADC)	v < 6.1.5	6.1.5

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