Add nextjs-images-wildcard-hostname security rule #3700
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- Detects overly permissive wildcard hostnames in Next.js images.remotePatterns - Prevents image injection attacks and potential SSRF vulnerabilities - Includes comprehensive test cases with positive and negative examples - Follows security metadata standards (CWE-200, OWASP A05:2021) - Targets javascript and typescript languages Fixes: Security misconfiguration in Next.js image configuration Category: security Technology: nextjs
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Summary
Adds a security rule to detect overly permissive wildcard hostnames in Next.js
images.remotePatternsconfiguration.Security Issue
Using
hostname: "**"in Next.js image configuration allows loading images from any domain, which can lead to:Solution
The rule detects wildcard hostname patterns and suggests using specific domains or more restrictive patterns.
Files Added
javascript/nextjs/security/nextjs-images-wildcard-hostname.yaml- Rule definitionjavascript/nextjs/security/nextjs-images-wildcard-hostname.js- Test casesMetadata
Test Coverage