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syncfusion-aspnetcore-security

Configure Content Security Policy nonces for Syncfusion ASP.NET Core EJ2 components.

2|Updated Mar 30, 2026
Search Tags:#security#csp#syncfusion#nonce#content security policy#aspnet core#cdn allowlist
One-click install
npx skills add https://github.com/syncfusion/aspnetcore-ui-components-skills --skill syncfusion-aspnetcore-security
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: syncfusion-aspnetcore-security
Source: https://github.com/syncfusion/aspnetcore-ui-components-skills/tree/main/skills/syncfusion-aspnetcore-security
Command: npx skills add https://github.com/syncfusion/aspnetcore-ui-components-skills --skill syncfusion-aspnetcore-security

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you configure strict Content Security Policy settings for Syncfusion ASP.NET Core EJ2 components without breaking scripts, styles, or theme resources. It reduces the trial-and-error involved in getting secure headers, nonces, and external allowlists working together.

Core Features & Use Cases

  • Per-request nonces: Generate and apply a unique nonce so trusted inline initialization can run safely.
  • CSP header setup: Define practical script, style, font, and object directives for secure deployments.
  • Syncfusion integration: Add nonce support to theme links, scripts, and the Syncfusion script manager.
  • External resource allowlisting: Permit required CDN and Google Fonts endpoints for Syncfusion themes.
  • Troubleshooting: Diagnose blocked resources and template-related CSP issues in browser console output.
  • Use case: Secure an ASP.NET Core app that uses Syncfusion grids, schedulers, or themed UI components under a strict security policy.

Quick Start

Ask the assistant to help you add a strict Content Security Policy with nonces for Syncfusion ASP.NET Core components and show exactly where to update your middleware and layout.

Frequently Asked Questions about syncfusion-aspnetcore-security

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I configure Content Security Policy for Syncfusion ASP.NET Core components without breaking inline scripts?▼

To configure Content Security Policy for Syncfusion ASP.NET Core components, apply per-request nonces to inline scripts, styles, and theme links. This ensures trusted initialization runs safely while minimizing unsafe-inline and unsafe-eval usage in strict deployments.

Why does Content Security Policy block Syncfusion EJ2 themes and scripts?▼

Content Security Policy blocks Syncfusion EJ2 themes and scripts when external CDN endpoints, Google Fonts, or inline initialization scripts lack explicit allowlisting or per-request nonces. Aligning response headers with script and style tags resolves these blocked resource errors.

Do I need per-request nonces for strict CSP in ASP.NET Core apps using Syncfusion grids?▼

Yes, per-request nonces are required for strict CSP in ASP.NET Core apps using Syncfusion grids. Generating and applying a unique nonce allows trusted inline initialization to run safely without relying on unsafe-inline permissions.

What's the best way to allowlist Syncfusion CDN and Google Fonts in a Content Security Policy?▼

The best way to allowlist Syncfusion CDN and Google Fonts in a Content Security Policy is to define explicit script, style, and font directives within your ASP.NET Core response headers. Specify the required CDN and Google Fonts endpoints to permit theme resources.

How to troubleshoot template-driven control CSP issues in Syncfusion ASP.NET Core?▼

To troubleshoot template-driven control CSP issues in Syncfusion ASP.NET Core, diagnose browser console output for blocked resources. Ensure template scripts have applied nonces and verify that external endpoints are properly allowlisted in your policy directives.

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