Cenk KURTOĞLU

Supabase RLS audits. I find the cross-tenant leaks a linter cannot see: policy conflicts, unisolated membership joins, service-role key exposure. Read-only access or a sanitized schema dump is enough.

Joined on Jun 21, 2026 https://cenkkurtoglu.com/supabase-rls-security-audit

Work

Independent Next.js + Supabase reviewer and production bug-fix developer

Pinned

Cenk KURTOĞLU

Aug 7

Before You Pay for a Next.js or Supabase Bug Fix, Capture These 6 Signals

#nextjs #supabase #debugging #webdev

3 min read

Cenk KURTOĞLU

Aug 13

You shipped a Supabase app with AI. Here are the 4 security holes it probably has (and the 5-minute fixes)

#supabase #postgres #security #webdev

5 min read

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Cenk KURTOĞLU

Aug 13

New Row Violates Row-Level Security Policy: The Real Fix

#supabase #postgres #security #webdev

4 min read

Cenk KURTOĞLU

Aug 12

Supabase Storage Upload Fails With RLS (403: new row violates row-level security policy)

2 min read

Cenk KURTOĞLU

Aug 12

Why Supabase RLS Returns Nothing or 42501 (auth.uid() Is Null on the Server)

3 min read

Cenk KURTOĞLU

Aug 12

7 Ways Your Supabase App Still Leaks Data With RLS Enabled

3 min read

Cenk KURTOĞLU

Aug 12

Test your Supabase RLS before you ship: a free red/green fixture and the 9 SQL checks a linter cannot run

#supabase #postgres #security #webdev

4 min read

Cenk KURTOĞLU

Aug 7

Your Supabase service_role key is probably in your browser bundle

#supabase #nextjs #security #webdev

5 min read

Cenk KURTOĞLU

Aug 7

Stripe doesn't support my country. Here's how you ship a paid product anyway (2026)

#payments #saas #stripe #webdev

2 min read

Cenk KURTOĞLU

Aug 7

Two SQL queries that tell you whether your Supabase RLS is actually on

#postgres #security #supabase #webdev

6 min read

Cenk KURTOĞLU

Aug 7

Your Supabase service_role key is probably in your browser bundle

#supabase #security #nextjs #webdev

5 min read

Cenk KURTOĞLU

Aug 7

Your Supabase RLS policy passes every test and still leaks

#supabase #postgres #security #webdev

4 min read

Cenk KURTOĞLU

Jul 4

I built an API-callable llms.txt generator after Lighthouse added an audit

#ai #webdev #seo #opensource

2 min read

Cenk KURTOĞLU

Jul 3

If Stripe is not available in your country, check this before rebuilding your SaaS billing

#nextjs #saas #payments #webdev

2 min read

Cenk KURTOĞLU

Jul 3

I will review 5 Next.js SaaS landing/payment flows today

#nextjs #saas #webdev #indiehackers

2 min read

Cenk KURTOĞLU

Jul 3

What 'Production-Ready' Actually Means for a Next.js Template (a Checklist)

#nextjs #webdev #tailwindcss #beginners

3 min read

Cenk KURTOĞLU

Jul 3

Ship a Client Website in a Day: The Single-Config Pattern for Next.js

#nextjs #webdev #freelance #typescript

3 min read

Cenk KURTOĞLU

Jul 3

I Built 20 Production-Ready Next.js + Tailwind Templates — Here's the Architecture

#nextjs #webdev #tailwindcss #typescript

3 min read

Cenk KURTOĞLU

Jul 3

How I Wire Polar MoR Payments In A Next.js SaaS Without Stripe

#nextjs #saas #payments #webdev

3 min read

Cenk KURTOĞLU

Jun 30

Next.js 15 App Router SEO done right: generateMetadata, dynamic sitemaps, and the one-file strategy

#nextjs #seo #webdev #react

6 min read

Cenk KURTOĞLU

Jun 28

23 Production-Ready Next.js 15 + Tailwind Templates (Live Demos You Can Click)

#nextjs #tailwindcss #webdev #react

2 min read

Cenk KURTOĞLU

Jun 23

New Technical Article

#nextjs #react #saas #webdev

2 min read

Cenk KURTOĞLU

Jun 23

Top 5 Modern Next.js SaaS Templates to Launch Your Startup in 2026

#nextjs #react #saas #webdev

2 min read

Cenk KURTOĞLU

Jun 23

Untitled

#nextjs #webdev

1 min read

Cenk KURTOĞLU

Jun 23

Untitled

#nextjs #webdev

1 min read

Cenk KURTOĞLU

Jun 22

10 Best AI Tools for Shopify Store Owners in 2026

#shopify #ecommerce #ai #marketing

2 min read

Cenk KURTOĞLU

Jun 22

Why Static Product Photos Are Killing Your Shopify Sales (And How to Fix It)

#shopify #ecommerce #marketing #webdev

2 min read

Cenk KURTOĞLU

Jun 22

How I Automated My Shopify Store's Video Ads Using AI (And Increased Conversions by 40%)

#shopify #ecommerce #ai #webdev

2 min read

Cenk KURTOĞLU

Jun 22

How I add Polar (Merchant of Record) + Stripe to any Next.js app in 10 minutes — without an SDK

#nextjs #stripe #payments #webdev

2 min read

Cenk KURTOĞLU

Jun 22

What 'production-ready' actually means for a Next.js template - a single-source-of-truth architecture

#showdev #nextjs #tailwindcss #webdev

3 min read

Cenk KURTOĞLU

Jun 22

Top 5 Modern Next.js SaaS Templates to Launch Your Startup in 2026

#nextjs #react #saas #webdev

2 min read

Cenk KURTOĞLU

Jun 22

What "production-ready" actually means for a Next.js template — a single-source-of-truth architecture

#showdev #nextjs #tailwindcss #webdev

4 min read

Cenk KURTOĞLU

Jun 22

How I add Polar (Merchant of Record) + Stripe to any Next.js app in 10 minutes — without an SDK

#nextjs #stripe #payments #webdev

3 min read

Cenk KURTOĞLU

Jun 21

I built 20 production Next.js 15 templates: the stack, patterns, and lessons

#nextjs #webdev #typescript #tailwindcss

3 min read

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