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Cybersecurity Researchers Disclose Amazon Kiro Prompt-Injection Data-Exfiltration Vulnerability

The Hacker News 2026-09-19 indirect prompt injection Critical

Executive Summary

Researchers disclosed an Amazon Kiro prompt-injection flaw where attacker-controlled repository content could make the agent send sensitive local information to an external endpoint through Kiro Powers.

What Happened

Security researchers disclosed a vulnerability in Amazon Kiro, an agentic integrated development environment, in which attacker-controlled repository content could influence the agent. The reported attack path could cause sensitive local information to be transmitted to an external endpoint through prompt injection and Kiro Powers.

Affected Products

  • Amazon Kiro

Vulnerability / Attack Technique

Indirect prompt injection leading to data exfiltration

Technical Mechanism

Repository content carried instructions the Kiro agent followed, using Kiro Powers to transmit local data externally.

AI Security Category

LLM01:2025 Prompt Injection

Part of the Prompt Injection topic.

Relevant Frameworks

LLM01:2025 Prompt InjectionLLM02:2025 Sensitive Information DisclosureMITRE ATLAS: Exfiltration

RealGround Analysis

The same Kiro issue reported by multiple outlets. RealGround analysis: agent extensions that can send data out need approval prompts when triggered by untrusted content.

Recommended Controls

  • Update Kiro
  • Require approval before agent extensions send data externally

Related RealGround Service

Secure AI Agent Build · or start with the free AI Agent Security Scanner.

Sources

The Hacker News: https://thehackernews.com/search/label/Application%20Security

Summary and analysis written by RealGround from the source above; last updated 2026-10-17.

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