n8n
Ni8mare (CVE-2026-21858): Patch n8n's CVSS 10.0 Webhook RCE and Rotate Your Credentials
Patch Ni8mare (CVE-2026-21858): upgrade self-hosted n8n to 1.121.0+ to fix the CVSS 10.0 webhook RCE, verify the fix, and rotate all exposed credentials.
N8n
n8n
n8n Retry On Fail and Paid APIs: Stop Double Charges with Idempotency Keys
n8n Retry On Fail re-sends failed HTTP calls. Learn how stable idempotency keys and a Postgres checkpoint table stop paid APIs from charging twice.
n8n
n8n October 2026 Security Bulletin: Patch Guide for Self-Hosted Instances
n8n's October 14, 2026 security bulletin ships High-severity fixes. This guide maps each release line to its patch version and walks through a safe upgrade.
n8n
How to Fix n8n AI Agent Not Calling Tools: 4 Proven Fixes
Fix an n8n agent that ignores its tools: rewrite tool descriptions, add $fromAI() params, enable Force Tool Call on First Iteration, and use a capable model.
n8n
Fix n8n 'Connection Lost' Behind NGINX: WebSocket and Reverse Proxy Guide
Fix the n8n 'Connection lost' banner behind NGINX or Caddy: WebSocket upgrade passthrough, proxy buffering, N8N_PROXY_HOPS, and how to rule out memory crashes.
n8n
How to Fix n8n 'Webhook Not Registered' 404 Errors Behind a Reverse Proxy
Fix n8n's 404 'webhook is not registered' error: decode the message, set N8N_WEBHOOK_URL behind a reverse proxy, and fix Nginx headers and route-param paths.
n8n
n8n September 2026 Security Advisories: Patch Checklist for Self-Hosted Instances
n8n issued three advisory batches in September 2026, most without CVE IDs, so scanners miss them. This checklist maps each batch to its patch versions.
n8n
Fix n8n 'Database Not Ready': SQLite VACUUM Fix
Fix n8n's 'database not ready' error on SQLite: diagnose disk and database bloat, run VACUUM safely, tune execution pruning, and plan a PostgreSQL migration.
n8n
pdfRest n8n Node Tutorial: Automate PDFs (OCR, Redaction, ZUGFeRD E-Invoicing)
Install pdfRest's official n8n node and automate PDFs: OCR scanned documents, permanent redaction, and ZUGFeRD e-invoicing workflows, step by step.
n8n
n8n Microsoft Dataverse Node Tutorial: Automate Dynamics 365 Data (2026)
Hook n8n to Microsoft Dataverse: register an Entra ID app, pick the OAuth2 grant, run all six row operations, query with OData and FetchXML, fix real errors.