fix(security): secure api key generation with session validation#30
fix(security): secure api key generation with session validation#30Shreyassp002 wants to merge 1 commit intomainfrom
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…ession - Implemented `createSSRClient` in `src/lib/supabase.ts` for cookie-based session management matching project architecture. - Modified `getAuthContext` in `src/app/api/v1/auth/api-keys/route.ts` to require a valid Supabase Auth session and ensure the authenticated user's wallet address matches the requested `x-wallet-address` header. - Fixes a critical P0 authentication bypass where an attacker could overwrite or delete API keys for any merchant by forging the `x-wallet-address` header. Co-authored-by: Shreyassp002 <96625037+Shreyassp002@users.noreply.github.com>
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⚡ Flash Review
🚨 Critical (must fix before merge)
✅ What's good: Appreciate the focus on securing API key generation, which is crucial for Flash Protocol's integrity. ⚡ Powered by Flash Review · Report Issue
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| @@ -12,6 +12,13 @@ async function getAuthContext(req: NextRequest) { | |||
| const walletAddress = getWalletAddress(req) | |||
| if (!walletAddress) return null | |||
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⚡ Flash Review
The use of createSSRClient in an API route (/api/v1/*) might be problematic. createSSRClient is typically designed for Server Components or getServerSideProps contexts, where it implicitly handles cookies. In API routes, createServerClient (from @supabase/auth-helpers-nextjs) is usually preferred, explicitly passing cookies() from next/headers to ensure the session cookie is correctly read from the NextRequest. If createSSRClient isn't specifically configured to handle NextRequest cookies in this context, supabaseSsr.auth.getUser() might incorrectly return null, leading to authentication failures for legitimate users.
Fix: Verify that createSSRClient is robustly implemented to read session cookies from NextRequest in API routes. If not, consider using createServerClient with cookies() from next/headers for consistency and reliability in API authentication.
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Closing: the fix assumes Supabase Auth sessions exist, but this app uses wallet-based auth (Reown AppKit + Wagmi). supabaseSsr.auth.getUser() would always return null, breaking API key generation for all users. The underlying x-wallet-address trust issue is real but requires an architectural fix across all internal routes, not a single-route patch with the wrong auth mechanism. |
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Category: Security
Priority: P0
What: Implemented server-side session cookie verification in
getAuthContextusing@supabase/ssrto ensure the requestedx-wallet-addressmatches the authenticated user's session metadata.Why: The endpoint previously relied solely on the unvalidated
x-wallet-addressheader combined withcreateServerClient()(which bypasses RLS), allowing an attacker to generate, view, or revoke API keys for any merchant, leading to a complete compromise of the v1 API access.Impact: Prevents unauthorized generation and revocation of API keys by enforcing that the caller actually owns the wallet address via a valid Supabase session cookie.
Verification: Ran
npm run lintandnpm run buildsuccessfully. Verified thatgetAuthContextstrictly matches thewalletAddressagainst theuser.user_metadata?.wallet_addressfrom the session.PR created automatically by Jules for task 3598519831060995355 started by @Shreyassp002