Topic starter
11/06/2026 11:46 pm
TL;DR: September’s MCP ecosystem expansion coincided with prompt-injection warnings, supply-chain abuse, and new vulnerability reporting, according to Pomerium’s roundup of the month’s news. The underlying issue is not adoption alone, but that agentic access is reaching production before identity, authorization, and governance models are ready.
Editorial analysis by NHI Mgmt Group, based on content published by Pomerium: “September 2025 MCP Round‑Up: Growing Adoption Meets Rising Security Fears”.
Key questions
Q: What breaks when an MCP server has no clear authorization boundary?
A: Without a clear authorization boundary, teams are forced to improvise trust decisions inside the server logic itself.
Q: Why do prompt injection attacks become more serious in MCP environments?
A: Prompt injection becomes more serious because the agent can act on manipulated content, not just display it.
Q: What are the signs that an MCP access model is too broad?
A: Common signs include agents that can reach multiple internal systems through one connection, shared credentials across tools, and no per-tool audit trail.
Practitioner guidance
- Inventory every MCP server and connector Map each server, registry entry, package source, and downstream system the agent can reach.
- Scope authorization per tool, not per agent Define the exact tools and operations each agent may use, then narrow access so prompt interpretation cannot automatically become broad system access.
- Treat untrusted content as execution-adjacent Assume prompt injection and indirect prompt injection can redirect the agent into calling legitimate tools with malicious intent embedded in the input.
Bottom line: MCP adoption is exposing a gap between rapid agentic rollout and the access governance needed to contain delegated tool use.
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This topic was modified 1 day ago by NHI Mgmt Group
12/06/2026 8:36 am
Agentic access has become an identity problem before it is a product problem: MCP is being adopted as if tool connectivity were the main issue, but the real issue is delegated authority. Once agents can invoke tools and touch live systems, the organisation is governing runtime behaviour, not just integration plumbing. That shifts MCP from developer convenience into identity governance territory, where access scope, intent, and auditability are the primary controls.
A few things that frame the scale:
- 24,008 unique secrets were exposed in MCP configuration files in 2025 alone, the protocol's first year of widespread adoption, according to the State of Secrets Sprawl 2026.
A question worth separating out:
Q: How should teams govern MCP at scale without overexposing tools?
A: Teams should govern MCP as a capability-based control plane, with explicit approval for server provenance, granular scoping for each tool, and monitoring that covers every request and response. The goal is to keep discoverability useful while preventing shared interfaces from becoming shared privilege.
👉 Read our full editorial: MCP adoption is outpacing security controls for agentic access
This post was modified 1 day ago by NHI Mgmt Group