AutoJack: How a single page can RCE the host running your AI agent
2026-06-22T08:52:20Z•70827eb7b91e168b9ba1cf239142fc69ebbaf8f297bb472c3c31ff607cadfd8d
agent-securityai-agent-securityassertautogen-studioautojackbackdoorclipboard-theftcrypto-clipperforensicslocalhost-trustmastramcp-websocketmdashmitigationnpm-supply-chainpostinstall-payloadrcesupply-chain-compromisethreat-inteltor-c2unsafe-parameter-handlingworm-like-propagation
What happened
The feed highlights several active security issues and research: AutoJack — a novel exploit chain where a single malicious webpage can cause remote code execution on the host running an AI browsing agent by abusing localhost trust, missing authentication, and unsafe parameter handling (specifically targeting AutoGen Studio’s MCP WebSocket), illustrating that agent browsing + local service access breaks traditional localhost trust boundaries. A separate supply‑chain incident (Mastra) shows a poisoned npm package that delivered a postinstall payload and infected 140+ projects. Microsoft also dis
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- microsoft_security_blog
- Record identifier
- 70827eb7b91e168b9ba1cf239142fc69ebbaf8f297bb472c3c31ff607cadfd8d
- Enrichment time
- 2026-06-22T08:52:20Z
- AI-assisted enrichment
- Yes
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