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I have recently reported CVE-2026-116691, that I found in MLFlow - one of the most popular platform for ML (20M+ Weekly downloads, used by DataBricks, Walmart, Spotify).

I found the API as Plain text.

How?

The instrumentation layer - MLFlow had did the serialization of the LLM's Pythonic object and placed it in plain text into its trace.

Something that went over all of the cummon Security best practices - the Least Priviledge Access model.

You can use identity cotrols access. How can you control data flow?

Thats why I've built Weir - it can be used to making sure what AI Agents has actual access to - as SDK with no egress what so ever.

What do you think? how can you guard your agent and your agent's harness agents such leaks?