---
id: "CVE-2026-117570"
kind: "vulnerability"
aliases: ["CVE-2026-117570"]
title: "nmap-mcp: allowlist bypass lets MCP callers run intrusive Nmap scripts"
severity: "medium"
cvss: 5.2
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-agents", "ai-tooling", "mcp", "nmap", "self-hosted"]
not_affected_if: ["server-not-deployed", "tool-not-exposed"]
published_at: "2026-10-27T14:16:39+00:00"
first_seen_at: "2026-10-27T14:32:19+00:00"
updated_at: "2026-10-27T14:33:14+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117570", "first_seen_at": "2026-10-27T14:32:19+00:00"}]
---

# nmap-mcp: allowlist bypass lets MCP callers run intrusive Nmap scripts

The nmap-mcp server's scan_vulnerabilities tool fails to enforce its allowlist, so callers can pass blocked NSE script categories such as exploit, dos, brute, or intrusive to nmap. A caller, or an agent steered by prompt injection, can therefore launch exploit, brute-force, or denial-of-service scripts against scan targets.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the deployed nmap-mcp code includes commit `3636afa` or earlier, for example with `git log --oneline | grep 3636afa` in the nmap-mcp checkout
- Confirm which MCP clients can reach the scan_vulnerabilities tool

## Fix

- unknown: the sources do not name a fixed commit or release; check the Vorota-ai nmap-mcp repository for a newer version and remove the tool from agents until a patched build is in place

## Timeline

- 2026-10-27T14:32:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117570

## From the sources

Vorota-ai nmap-mcp through commit 3636afa contains an improper allowlist validation vulnerability in the scan_vulnerabilities tool that lets callers run blocked NSE script categories. MCP clients or prompt-injected agents can pass categories like exploit, dos, brute, or intrusive to nmap --script, running intrusive, brute-force, exploit, or denial-of-service scripts against scan targets.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_