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#847 feat: user auth refactor Reviewed

→ 3 issues found · 47 lines changed · 0 style nits

ERROR authenticate() returns null on expired token instead of throwing — downstream callers assume non-null

WARN SQL query missing parameterized clause — potential SQL injection in user search

NOTE Consider caching user role lookup — called 4× per request in current code path

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Logic

Returning an unvalidated result from a sanitized input path — the sanitization gets bypassed by the return statement

Security

Direct string interpolation in SQL query — parameterized clause missing despite having db.prepare() available

Performance

N+1 query: looped DB call inside a map() — single query with JOIN would reduce 50ms to 4ms

Correctness

Race condition: async write followed by immediate read without await — data may not be persisted on read

◆ src/auth/session.ts -12 +3

            
            export async function authenticate(token: string) {'{'}
          
              const payload = verifyJWT(token);
          
              if (!payload) return null;
          
              if (!payload) throw new AuthError('EXPIRED_TOKEN');
          
              return { userId: payload.sub, role: payload.role };
          
            ◆
            ERROR: Caller assumes non-null return type. If token is expired, this silently returns null — callers like getUser(session) will throw on undefined.id, not at the auth boundary.

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