First reported aaif.io
Lead dispatch
First reported · updated · 2 reports embracethered.com
AWS Kiro: Arbitrary Code Execution via Indirect Prompt Injection
Researchers disclosed a vulnerability in AWS Kiro, an agentic IDE, where hidden instructions planted in a web page or source file (indirect prompt injection) can make Kiro rewrite its own MCP server configuration (~/.kiro/settings/mcp.json) or allowlist arbitrary Bash commands in .vscode/settings.json, achieving arbitrary code execution on the developer's machine without any approval prompt. Because Kiro can write to these files without user consent, the human-in-the-loop approval boundary is bypassed entirely. Amazon issued CVE-2026-10591 and the flaw is now fixed.indirect-prompt-injection · tool-abuse · remote-code-execution · supply-chain
ai-agents · mcp · llm · coding-agent · ide
Severity
0.85
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