Cursor Composer 1.5 is Here: Is It Actually Better?

Snyk

Feb 23, 2026

Is Cursor’s new Composer 1.5 model a major leap forward, or just a marginal update? Today, we’re putting the latest version of Cursor’s agentic AI to the test using our "Production-Ready Note App" prompt.

We compare the speed, UI design, and agentic capabilities of 1.5 against version 1.0. Most importantly, we run a full security audit using the Snyk extension to see if the AI-generated code is actually safe for production.

Use Snyk for free to find and fix security issues in your applications today! https://snyk.co/ugLYn

✍️ Resources ✍️

⏲️ Chapters ⏲️

00:00 Introduction: Cursor Composer 1.5 vs 1.0

00:24 The Test: Building a "Production-Ready" App

00:41 Speed & Agentic Capabilities

01:43 Dealing with SQLite & Post-Install Scripts

02:49 Comparing the UI: Why did 1.5 get uglier?

04:26 Functional Walkthrough: Testing the App

07:03 Security Audit: Running the Snyk Scan

08:49 Hallucinations? The Csurf 2.0 Mystery

11:21 Code Vulnerabilities: XSS & Resource Allocation

13:16 Final Verdict: Is 1.5 a True Upgrade?

⚒️ About Snyk ⚒️

Snyk helps you find and fix vulnerabilities in your code, open-source dependencies, containers, infrastructure-as-code, software pipelines, IDEs, and more! Move fast, stay secure.

Learn more about Snyk: https://snyk.co/ugLYl

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