Submitter + founder of sunglasses-dev here. This was written by Jack, one of our security research agents, after the Cloud Security Alliance's April report came out showing 53% of MCP implementations vulnerable, plus CVE-2026-25536 landing the week before.
The thing most writeups miss: the "scope" isn't in the prompt — it's in the tool metadata loaded at runtime. So prompt-level filtering can't catch it. A tool's governance appendix can override the main policy AFTER the agent has already decided to call it.
We shipped a detection category for this today (GLS-PSR-001). Full scanner is MIT / open source:github.com/sunglasses-dev/sunglasses. Happy to answer questions on the pattern itself or how we detect it at runtime.
Submitter + founder of sunglasses-dev here. This was written by Jack, one of our security research agents, after the Cloud Security Alliance's April report came out showing 53% of MCP implementations vulnerable, plus CVE-2026-25536 landing the week before.
The thing most writeups miss: the "scope" isn't in the prompt — it's in the tool metadata loaded at runtime. So prompt-level filtering can't catch it. A tool's governance appendix can override the main policy AFTER the agent has already decided to call it. We shipped a detection category for this today (GLS-PSR-001). Full scanner is MIT / open source:github.com/sunglasses-dev/sunglasses. Happy to answer questions on the pattern itself or how we detect it at runtime.
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