nextjs-security

Detect and mitigate security vulnerabilities in Next.js SSR, routing, and API routes.

Updated Aug 27, 2026
One-click install
npx skills add https://github.com/varunisrani/Hare-erp --skill nextjs-security
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Please help me install this Agent Skill.
Skill: nextjs-security
Source: https://github.com/varunisrani/Hare-erp/tree/main/indusagi-strix/indusagi-strix-core/skills/frameworks/nextjs-security
Command: npx skills add https://github.com/varunisrani/Hare-erp --skill nextjs-security

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Next.js applications often suffer from SSR misconfigurations, client-side routing flaws, and API route security gaps. This Skill provides actionable guidance and practical detection patterns to identify and mitigate these weaknesses across Next.js projects.

Core Features & Use Cases

  • SSR vulnerability checks and safe rendering practices to prevent injection and data leakage.
  • Client-side routing security reviews, including XSS prevention and secure redirects.
  • API route authentication, input validation, and access control to protect backend endpoints.
  • Real-world scenarios: auditing a Next.js app with multiple pages and API routes to surface exploitable patterns and prescribe remediations.

Quick Start

Use this skill to assess a Next.js application for SSR, client-side, and API route security weaknesses and generate a prioritized remediation plan.

Frequently Asked Questions about nextjs-security

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

FAQPage Schema
How do I check my Next.js app for SSR vulnerabilities and insecure data handling?

To check Next.js SSR vulnerabilities, audit server-side rendering pages for unsanitized inputs and insecure data handling. This process identifies misconfigurations that cause injection or data leakage, providing structured checks to apply safe rendering practices across your application.

How do I secure API routes in Next.js against unauthorized access?

Securing Next.js API routes requires implementing authentication, input validation, and access controls across backend endpoints. This approach detects security gaps by applying structured parameterized checks to protect API routes from exploitable patterns and unauthorized data access.

What is the best way to prevent XSS and insecure redirects in Next.js client-side routing?

Preventing XSS and insecure redirects in Next.js client-side routing involves reviewing routing flaws and validating navigation inputs. This method surfaces exploitable patterns in client-side routing and prescribes remediations to ensure safe redirects and prevent cross-site scripting.

Does this Next.js vulnerability detection work for both development and production environments?

Next.js vulnerability detection works for both development and production environments to identify insecure data handling. Applied across Next.js projects, it satisfies requirements for parameterized checks, input validation, and safe default configurations in code and deployment.

Why does my Next.js application have API route security gaps and how do I fix them?

Next.js API route security gaps occur due to missing authentication and unsanitized inputs. You can fix these weaknesses by applying structured checks for input validation and access controls, generating a prioritized remediation plan to protect backend endpoints.

Can I generate a prioritized remediation plan after auditing my Next.js web app security?

You can generate a prioritized remediation plan after assessing a Next.js application for SSR, client-side, and API route security weaknesses. This audit surfaces exploitable patterns across pages and API endpoints, prescribing actionable fixes to mitigate identified vulnerabilities.