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The vulnerability in the Okta Java SDK arises from inadequate thread management in multithreaded implementations. When the SDK processes requests, it spawns threads for handling tasks, but fails to properly clean up these threads after completion. This leads to thread accumulation in memory, causing a gradual memory leak. In Java, threads that are not explicitly terminated or joined may remain referenced, preventing garbage collection. Over time, in long-running applications such as web servers or microservices, this accumulation exhausts available memory resources. Under sustained load, with continuous thread creation without cleanup, the memory leak accelerates. This results in increased garbage collection pressure, performance degradation, and eventual denial-of-service as the application becomes unresponsive. The issue is specific to code paths where thread pools or concurrent executors are used without proper lifecycle management. Versions 21.0.0 to 24.0.0 contain this flaw due to missing or improper invocation of thread interruption or pool shutdown methods. The memory leak is non-malicious but can be exploited by attackers to degrade availability. The patch in version 24.0.1 addresses this by ensuring threads are properly joined, interrupted, or managed through improved pooling mechanisms, thus releasing memory references and preventing accumulation.
Platform: Okta Java SDK
Version: 21.0.0-24.0.0
Vulnerability: Improper Memory Cleanup
Severity: Moderate
date: December 10 2025
Prediction: Patched 24.0.1
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Reported By: github.com
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