Fixing vulnerabilities: step-by-step remediation guide for developers
After the audit: action plan
Priority 1: Critical flaws — fix in 24-48h
Data accessible without authentication: add auth verification on every endpoint. In Supabase, create RLS policies. In Laravel, use auth middleware.
Unauthenticated webhooks: remove hardcoded URLs from frontend. Add HMAC signature verification.
Priority 2: High flaws — fix in 1 week
Privilege escalation: verify not just authentication but authorization (does THIS user have rights to THIS resource?).
Priority 3: Medium flaws — fix in 2 weeks
Security headers: add CSP, X-Frame-Options, HSTS.
Rate limiting: limit login attempts, API calls, account creation.
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Sources
Editorial analysis based on official vendor, project, and regulator documentation.
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