Same Flaw Found in AWS, Google, and Vercel AI Agent Frameworks Raises Alarm

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A vulnerability tracked as CVE-2026-18830 was discovered in AWS Bedrock AgentCore, allowing authenticated users to forge tool-use instructions that bypassed the LLM's decision-making gatekeeper entirely. Researchers found the same architectural flaw independently replicated in Google ADK and Vercel AI SDK, pointing to a systemic design problem across the agent-framework ecosystem. The root cause mirrors classic injection attacks: input crossing a trust boundary is executed without proper validation of its origin. Despite affecting three major platforms, the disclosure attracted virtually no public attention, raising concerns that developers running agent pipelines in production are not engaging with security research. Experts warn the issue is not a solved problem and should be treated as a nascent vulnerability category requiring dedicated tooling, much like SQL injection in its early days.

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