Known vulnerabilities need to be fixed before they're exploited.
A security vulnerability in a production application is a countdown to exploitation. The OWASP Top 10 covers the most common web application vulnerabilities: injection, broken authentication, broken access control, and more. Identifying which apply to your application and fixing them systematically.
Security vulnerabilities identified in the application — either from a penetration test, automated scan, or known vulnerability class — that need to be remediated
The OWASP Top 10 most common vulnerabilities and their fixes for Next.js/Node applications:
1. Injection (SQL, command injection): Using Drizzle ORM or parameterized queries prevents SQL injection. Raw SQL string interpolation is the vulnerability. Never build SQL queries with user input directly.
2. Broken Authentication: Weak session tokens, sessions that don't expire, no brute force protection. Fix: use established auth libraries (Clerk, NextAuth.js) rather than homegrown auth.
3. Broken Access Control: API endpoints that don't verify the user has permission to access the resource. The most common vulnerability. Fix: every API endpoint checks authorization before returning data.
4. Cryptographic Failures: Passwords stored in plaintext or with weak hashing. Sensitive data transmitted over HTTP. Fix: bcrypt for passwords, HTTPS everywhere (Vercel enforces this).
5. Security Misconfiguration:
Default credentials, exposed error stack traces in production, missing HTTP security headers. Fix: X-Frame-Options, X-Content-Type-Options, Strict-Transport-Security headers in Next.js config.
6. Vulnerable and Outdated Components:
Dependencies with known CVEs. Fix: npm audit, pnpm audit, Dependabot alerts.
7. Identification and Authentication Failures: No account lockout after failed attempts, no MFA option. Fix: rate limiting on auth endpoints, MFA support.
8. Software and Data Integrity Failures: Using unsigned dependencies, no CI/CD pipeline integrity checks.
9. Logging and Monitoring Failures: No audit logs, no alerting on anomalous activity.
10. SSRF (Server-Side Request Forgery): API endpoints that fetch URLs provided by users. Fix: validate and allowlist URLs before fetching.
Vulnerability remediation covering the identified issues, with fixes for OWASP Top 10 relevant to the application's tech stack
Authorization audit
every endpoint checked
Input validation
with Zod on all API routes
Security headers
in Next.js config
Rate limiting
on auth endpoints
Dependency audit
and remediation
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
Vulnerability remediation covering the identified issues, with fixes for OWASP Top 10 relevant to the application's tech stack
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
Security fix scope is the vulnerability list from the audit. Each vulnerability has a defined remediation.
Questions, answered.
Options: automated scan (OWASP ZAP), dependency audit (npm audit), penetration test (a security professional). Start with the automated tools; they find the easy wins.
Depends on the severity and count of vulnerabilities. Most OWASP Top 10 fixes are code changes, not architectural overhauls. A focused security sprint of 2-4 weeks addresses most standard vulnerabilities.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.