Oliver Kieselbach
84fe7575ba
Addresses the 3 findings from the 2026-06-30 MCP security review (v1.4.3 -> 1.4.4).
M3 host-header spoofing: centralize getPublicBaseUrl into config.ts (deletes the
duplicated copies in oauth.ts + access-guard.ts) and fail-fast at boot in production
when MCP_PUBLIC_URL is unset, instead of silently trusting caller-supplied
X-Forwarded-Host. Safe for the stage-1 deploy (minReplicas=0 -> no container runs).
M2 access-check hang: add AbortSignal.timeout (default 15s, env-overridable) to the
/api/auth/mcp fetch -- it was the only fetch without a timeout, on the path every
request traverses. Timeout falls through to the existing fail-closed catch.
M1 pre-auth flood + unbounded cache:
- boundedSet caps accessCache (default 10k, oldest-evict) -> no OOM under a
distinct-token flood on the 0.5GiB container.
- per-source-IP pre-auth limiter (isPreAuthRateLimited, default 120/min) on the
cache-MISS path only, keyed on IP not UPN so a forged token never burns a
victim's per-UPN budget. Kept LAYERED with the existing per-UPN limiter
(IP for pre-auth, identity for authenticated -- the SaaS-standard split).
- app.set('trust proxy', 1) for a spoof-resistant req.ip (single Envoy hop).
- parsePositiveInt fixes the RATE_LIMIT NaN-disables-limiter bug and guards all
new tunables; cleanup interval prunes the pre-auth bucket map.
Monitoring/UX: both 429 paths go through respondRateLimited -> structured greppable
log (kind=pre-auth|upn), Retry-After header, and an actionable body message.
Tests: parsePositiveInt, boundedSet, isPreAuthRateLimited, getPublicBaseUrl
fallback (security-guards.test.ts) + MCP_PUBLIC_URL pin (config-public-url.test.ts).
tsc clean; vitest 327 passed / 41 skipped.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Autopilot Monitor
Advanced monitoring and troubleshooting solution for Windows Autopilot deployments. Gain full visibility into every enrollment session with a detailed event timeline, fleet health dashboards, and session reporting. Define custom analysis rules to automatically detect issues and gather rules to collect targeted evidence. Retrieve diagnostics packages on demand, configure agent settings like auto-reboot behavior and automatic timezone adjustment — all managed centrally from the web dashboard.
Private Preview
Autopilot Monitor is currently running as a Private Preview. Visit autopilotmonitor.com to request access and learn more.
Overview
Autopilot Monitor provides real-time tracking, intelligent diagnostics, and automated troubleshooting for Windows Autopilot enrollment processes. It consists of:
- Bootstrap Script — PowerShell script deployed via Intune that starts monitoring early in the enrollment process
- Monitoring Agent — Lightweight .NET application that collects telemetry and evidence during enrollment
- Backend API — Azure Functions-based ingestion and processing pipeline
- Web Dashboard — Next.js application for real-time monitoring and fleet analytics
Architecture
For detailed information about the system architecture, components, and data flow, see Architecture Documentation.
Documentation
Full documentation is available at autopilotmonitor.com/docs
License
This project uses a split licensing model:
- MIT License — Agent (
src/Agent/) and Shared library (src/Shared/) — unrestricted use on end-user devices - AGPL-3.0 — Backend (
src/Backend/), Web Dashboard (src/Web/), and MCP Server (src/McpServer/) — server-side components remain open source
See LICENSE for full details.