Individual skill
hunt-nextjs
Hunt Next.js specific vulnerabilities — Server Actions arbitrary function execution, Middleware auth bypass via static asset paths, ISR cache poisoning, Image Optimization SSRF (/_next/image), RSC payload leakage, getServerSideProps injection, source map exposure, debug endpoint leakage. Use when target runs Next.js 13/14/15 or any React SSR framework.
skills/hunt-nextjs/SKILL.md
Source commit d67cc00d9297a15b9210121e0a93c33f9fb6be46
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- Matches the observed repository HEAD
- Yes
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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Repository context
- Repository stars (not skill ratings)
- 5,511
- Repository last updated
- Nov 9, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai-security Repository topic
- anthropic Repository topic
- application-security Repository topic
- bug-bounty Repository topic
- bugbounty Repository topic
- bugcrowd Repository topic
- claude Repository topic
- claude-code Repository topic
- claude-skills Repository topic
- ethical-hacking Repository topic
- engineering Derived category
- engineering-web Derived category
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Browse files
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Read excerpt
# HUNT-NEXTJS — Next.js / SSR Framework Vulnerabilities
## Crown Jewel Targets
Next.js-specific bugs that bypass auth or reach SSRF = High/Critical.
**Highest-value chains:**
- **Server Actions auth bypass** — Server Actions enforce auth client-side only → call action ID directly → unauthorized data mutation or exfil
- **Middleware bypass via `/_next/static/`** — middleware skips static asset paths → protected routes accessible via `/_next/data/` IDOR
- **`/_next/image` SSRF** — Image optimizer fetches attacker-controlled URL → internal network scan or cloud metadata
- **ISR stale cache poisoning** — inject malicious content into a cached page that gets served to all users
- **RSC payload leakage** — React Server Component flight data contains server-side props not meant for client
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