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First reported 21 Jul · updated 29 Aug · 3 reports embracethered.com

AWS Kiro: Arbitrary Code Execution via Indirect Prompt Injection

Researchers found a vulnerability (CVE-2026-10591) in AWS Kiro, an agentic IDE, where hidden instructions planted in a web page or source file that Kiro processes can trigger indirect prompt injection to rewrite Kiro's 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 with no approval prompt. The human-in-the-loop approval boundary is bypassed because Kiro can write to these config files without user consent, and AWS has issued a fix and CVE.

indirect-prompt-injection · prompt-injection · remote-code-execution · tool-abuse · config-poisoning
ai-agents · mcp · llm · agentic-ide

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First reported 29 Jul · updated 23 Aug · 8 reports enklypesalt.com

Document-borne AI worms can self-propagate through Copilot for Word | Hacker News

Researchers at enklypesalt.com demonstrated a document-borne, self-replicating prompt-injection worm that spreads through Microsoft Copilot for Word: a malicious Word document contains a hidden self-propagating prompt that, when processed by Copilot, forces the assistant to embed the same payload into other documents it drafts or edits, enabling zero-click chain propagation and data exfiltration. The write-up notes that at publication no robust mitigation for the broader vulnerability class was available, and the work is associated with assigned CVEs (CVE-2026-55145, CVE-2026-50522).

First reported 2 Aug cybermagazine.com

Morris II Worm: AI’s First Self-Replicating Malware | Cybersecurity Magazine

Morris II is a researcher-built, zero-click AI worm developed by Cornell Tech researchers that spreads via adversarial self-replicating prompts, tricking Gen AI models into replicating malicious input in their output. Tested against Gemini Pro, ChatGPT 4.0 and LLaVA, it demonstrates data extraction and spam propagation capabilities across AI-integrated ecosystems.

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