Executive Summary

Unit 42 examines how default settings in AWS AgentCore Harness can be exploited for prompt injection, enabling attackers to exfiltrate credentials. The analysis outlines the attack vector and provides actionable steps to harden agents against such threats.

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Intelligence Metadata - Source Publisher: Unit 42 (Palo Alto) - Published Date: 2026-09-18T10:00:36+00:00 - Category: research

Original Description: Analysis of how default configurations in AWS AgentCore Harness allow prompt injection to exfiltrate credentials, and key steps to secure your agents. The post A Vault with a Heap-View: The Uncomfortable Space Between AgentCore Harness and Identity appeared first on Unit 42.

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