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🛡️ Sentinel: Fix IP spoofing vulnerability in rate limiter #17

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🛡️ Sentinel: Fix IP spoofing vulnerability in rate limiter #17

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@google-labs-jules google-labs-jules bot commented Jan 15, 2026

🚨 Severity: HIGH
💡 Vulnerability: API routes were extracting client IP using x-forwarded-for directly, allowing attackers to spoof IPs and bypass rate limits. Additionally, the /api/architect/plan/revise endpoint lacked rate limiting entirely.
🎯 Impact: Potential DoS attacks and resource exhaustion (OpenRouter API costs).
🔧 Fix:

  • Created src/lib/utils/ip.ts with getClientIp helper that prioritizes NextRequest.ip (platform secure) and safely handles headers.
  • Refactored chat, plan, and select routes to use getClientIp.
  • Added rate limiting to revise route using the new utility.
    ✅ Verification: Validated with pnpm build (type check) and pnpm lint. Documentation added to .Jules/sentinel.md.

PR created automatically by Jules for task 11214571060074794443 started by @lightmyfireadmin

@google-labs-jules
feat(security): fix IP spoofing vulnerability in rate limiter and add…
4ed6989 
… missing checks

- Add `src/lib/utils/ip.ts` for secure IP extraction
- Update API routes to use `getClientIp`
- Add rate limiting to `/api/architect/plan/revise`
- Document security learning in `.Jules/sentinel.md`
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google-labs-jules bot commented Jan 15, 2026

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