CVE-2025-67505 is a concurrency-related vulnerability classified under CWE-362 (Race Condition) found in the Okta Java Management SDK, specifically in versions from 11.0.0 up to but not including 20.0.1. The vulnerability stems from improper synchronization in the ApiClient class when handling multiple concurrent API requests. Due to this race condition, the status code or response headers from one API response can inadvertently influence another concurrent request’s response. This can cause leakage or corruption of sensitive information such as authentication tokens, user data, or API response metadata. The issue arises because shared resources within the ApiClient are accessed without adequate locking or thread-safety mechanisms, allowing data from one thread to bleed into another. The vulnerability has a CVSS v3.1 score of 8.4, indicating high severity, with an attack vector of network (remote exploitation), requiring low privileges and no user interaction, but with high attack complexity due to the need to trigger concurrent requests precisely. The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially compromised component, impacting confidentiality and integrity severely, with limited impact on availability. The vulnerability was publicly disclosed on December 10, 2025, and is fixed in Okta SDK version 20.0.1. No known exploits have been reported in the wild yet, but the potential for sensitive data exposure or unauthorized access makes this a critical issue for organizations using the affected SDK versions in their identity management workflows.

For European organizations, this vulnerability poses significant risks especially for those integrating Okta’s Java SDK into their identity and access management (IAM) systems. The race condition can lead to unauthorized disclosure of sensitive identity data, such as tokens or user attributes, which could facilitate privilege escalation, account takeover, or data breaches. The integrity of API responses can also be compromised, potentially causing erroneous authorization decisions or corrupted data processing. Given the widespread use of Okta in sectors like finance, healthcare, government, and technology across Europe, exploitation could disrupt critical authentication workflows and expose personal data protected under GDPR, leading to regulatory penalties and reputational damage. The network-based attack vector means that attackers do not need local access, increasing the threat surface. Although exploitation complexity is high, automated or targeted attacks in multi-threaded environments could succeed, especially in high-load or cloud-based deployments. The limited availability impact means service disruption is less likely, but confidentiality and integrity impacts are severe, making this vulnerability a priority for remediation in European enterprises relying on Okta SDK.

European organizations should immediately upgrade all instances of the Okta Java Management SDK to version 20.0.1 or later, where the race condition is fixed. Until the upgrade can be applied, organizations should implement strict concurrency controls around the usage of the ApiClient class, such as serializing API calls or using external synchronization mechanisms to prevent concurrent requests from sharing mutable state. Conduct thorough code reviews and testing to ensure no other shared mutable state exists in custom integrations with the SDK. Monitor API request and response logs for anomalies that could indicate exploitation attempts, such as inconsistent or unexpected response headers or status codes. Employ network segmentation and strict access controls to limit exposure of systems using the vulnerable SDK. Additionally, implement runtime application self-protection (RASP) or web application firewall (WAF) rules to detect and block suspicious concurrent request patterns targeting the Okta API endpoints. Finally, ensure incident response teams are aware of this vulnerability and prepared to investigate potential data integrity or confidentiality incidents related to Okta SDK usage.