⭐ If this plugin caught a real bug for you, star the repo — it's the signal that keeps these rules maintained.

Description

This plugin provides Comprehensive security rules for Express.js applications, mapping to OWASP Top 10.

Philosophy

Interlace fosters strength through integration. Instead of stacking isolated rules, we interlace security directly into your workflow to create a resilient fabric of code. We believe tools should guide rather than gatekeep, providing educational feedback that strengthens the developer with every interaction.

Getting Started

• To check out the guide, visit eslint.interlace.tools. 📚
• 要查看中文 指南, 请访问 eslint.interlace.tools. 📚
• 가이드 문서는 eslint.interlace.tools에서 확인하실 수 있습니다. 📚
• ガイドは eslint.interlace.toolsでご確認ください。 📚
• Para ver la guía, visita eslint.interlace.tools. 📚
• للاطلاع على الدليل، قم بزيارة eslint.interlace.tools. 📚

npm install eslint-plugin-express-security --save-dev

⚙️ Configuration Presets

| Preset | Description | | :------------ | :---------------------------------------------------------------------- | | recommended | Balanced security for Express projects (critical as error, others warn) | | strict | Maximum security enforcement (all rules as errors) | | api | HTTP/API security rules only (CORS, CSRF, cookies, rate limiting) | | graphql | GraphQL-specific security rules only |

📚 Supported Libraries

| Library | npm | Downloads | Detection | | :-------- | :---------------------------------------------------------------------------------------------------------- | :----------------------------------------------------------------------------------------------------------------- | :----------------------- | | express | | | Misconfig, DoS | | helmet | | | Missing Security Headers | | cors | | | Permissive CORS | | csurf | | | Missing CSRF Protection |

📦 Compatibility

| Package | Version | | :--- | :--- | | ESLint | ^8.0.0 \|\| ^9.0.0 \|\| ^10.0.0 | | Node.js | >=18.0.0 |

See the ESLint Version Support Policy — current ecosystem share data, the 20% gate, and the forward-looking exception that covers v10.

Rules

Legend

| Icon | Description | | :---: | :--- | | 💼 | Recommended: Included in the recommended preset. | | ⚠️ | Warns: Set to warn in recommended preset. | | 🔧 | Auto-fixable: Automatically fixable by the --fix CLI option. | | 💡 | Suggestions: Providing code suggestions in IDE. | | 🚫 | Deprecated: This rule is deprecated. | | 🟢 | Type-unaware: AST-only, runs in oxlint JS-plugin tier. | | 🟡 | Type-aware (refining): pure-AST primary path; types refine precision. | | 🟠 | Type-aware (graceful): requires TS program; silent without it. |

| Rule | CWE | OWASP | CVSS | Description | 🧠 | 💼 | ⚠️ | 🔧 | 💡 | 🚫 | | :--- | :---: | :---: | :---: | :--- | :---: | :---: | :---: | :---: | :---: | :---: | | no-cors-credentials-wildcard | CWE-942 | | | The rule provides LLM-optimized error messages (Compact 2-line format) with actionable security guidance: | 🟢 | | | | | | | no-exposed-debug-endpoints | CWE-489 | A05:2021 | | Identifies potential debug, administration, or testing endpoints that are often left exposed in production… | 🟢 | | | | | | | no-express-unsafe-regex-route | CWE-1333 | | | This rule detects Regular Expression Denial of Service (ReDoS) vulnerabilities in Express route patterns | 🟢 | | | | | | | no-graphql-introspection-production | CWE-200 | | | This rule detects GraphQL servers with introspection enabled in production | 🟢 | | | | | | | no-insecure-cookie-options | CWE-614 | | | The rule provides LLM-optimized error messages (Compact 2-line format) with actionable security guidance: | 🟢 | 💼 | | | | | | no-permissive-cors | CWE-942 | | | Detects overly permissive CORS configurations in Express.js applications | 🟢 | 💼 | | | | | | require-csrf-protection | CWE-352 | | | The rule provides LLM-optimized error messages (Compact 2-line format) with actionable security guidance: | 🟢 | 💼 | | | | | | require-express-body-parser-limits | CWE-400 | | | The rule provides LLM-optimized error messages (Compact 2-line format) with actionable security guidance: | 🟢 | | | | | | | require-helmet | CWE-693 | | | This rule detects Express.js applications that are missing the helmet middleware | 🟢 | 💼 | | | | | | require-rate-limiting | CWE-770 | | | This rule detects Express.js applications missing rate limiting middleware | 🟢 | 💼 | | | | |

🔗 Related ESLint Plugins

Part of the Interlace ESLint Ecosystem — AI-native security plugins with LLM-optimized error messages:

| Plugin | Downloads | Description | | :--- | :---: | :--- | | eslint-plugin-secure-coding | | General security rules & OWASP guidelines. | | eslint-plugin-pg | | PostgreSQL security & best practices. | | eslint-plugin-node-security | | Node.js core-module security (fs, child_process, vm, crypto, Buffer). | | eslint-plugin-jwt | | JWT security & best practices. | | eslint-plugin-browser-security | | Browser-specific security & XSS prevention. | | eslint-plugin-express-security | | Express.js security hardening rules. | | eslint-plugin-lambda-security | | AWS Lambda security best practices. | | eslint-plugin-nestjs-security | | NestJS security rules & patterns. | | eslint-plugin-mongodb-security | | MongoDB security best practices. | | eslint-plugin-vercel-ai-security | | Vercel AI SDK security hardening. | | eslint-plugin-import-next | | Next-gen import sorting & architecture. |

⭐ Support & follow

If this plugin caught a real bug for you, star the repo — stars are the signal that keeps the Interlace ESLint ecosystem maintained — and follow the writeups on Dev.to for the benchmarks and security research behind these rules.

📄 License

MIT © Ofri Peretz