Cursor Security Scanner
Building with Cursor AI? Make sure the code it helps you write is secure. We find vulnerabilities in AI-assisted applications.
Enter your deployed app's URL. Review the findings, take the suggested fixes to your coding tool, and retest after making changes.
First scan free: issue counts and one finding revealed in detail. No card required.
Cursor-Assisted Code Considerations
Cursor makes development fast, but AI-generated code often skips security best practices:
- !AI suggestions may include insecure code patterns
- !Secrets might be suggested in plaintext
- !Generated code may skip input validation
- !Security best practices may be overlooked for speed
Where Security Breaks in Cursor Apps
Built on Supabase (Postgres + RLS), Cursor applications share a recognizable fingerprint, which means attackers and automated scanners find them the same way every time. Based on real vulnerability patterns in Cursor deployments, the breakdown is 2 critical-impact issues, 2 high-impact, and 1 medium-or-lower.
Real-world observation
CVE-2025-54135 (CurXecute): Slack messages could trigger remote code execution.
Prompt Injection in MCP Servers
Malicious content in MCP tool responses can execute arbitrary commands.
Fix: Review MCP server sources. Avoid untrusted MCP integrations. Watch for suspicious tool calls.
Workspace Trust Exploitation
Malicious .cursor/rules files execute when opening untrusted projects.
Fix: Enable Workspace Trust in settings. Review .cursor/ files before opening projects.
Code Suggestion Security Flaws
AI suggests vulnerable patterns: SQL injection, hardcoded secrets, weak auth.
Fix: Review all AI suggestions critically. Run security scans on generated code.
Privacy and Code Exfiltration
Code sent to AI servers may expose proprietary logic or secrets.
Fix: Enable Privacy Mode. Use .cursorignore for sensitive files.
Supply Chain via Package Hallucination
AI suggests non-existent packages that attackers could register.
Fix: Verify all package suggestions exist. Check package reputation before installing.
What We Check
Secret Detection
Scans your codebase for any API keys, tokens, or credentials that should be in environment variables.
Code Security
Analyzes code patterns for common vulnerabilities like injection, XSS, and insecure dependencies.
Database Security
Tests your database configuration for proper access controls and security policies.
Security Headers
Verifies your deployed application has proper HTTP security headers configured.
What You'll Get
Why Cursor Apps Need Security Scanning
Cursor is a powerful AI-powered code editor that dramatically speeds up development by providing intelligent code suggestions and completions. However, AI assistants optimize for functionality and developer productivity, which can sometimes mean security best practices take a back seat.
When Cursor helps you write code quickly, it's easy to accept suggestions that work but may have security implications. API keys might end up in source files, input validation might be skipped, and security configurations might be deferred for 'later' and forgotten.
vas scans your deployed application to catch the security issues that can slip through during rapid AI-assisted development. We check for exposed secrets, analyze your security configuration, and verify that your database and authentication are properly secured.
How Cursor Security Scanning Works
Submit Your URL
Enter your Cursor application URL. Our scanner automatically detects your tech stack and configures the appropriate security checks for Cursor.
Automated Analysis
We check the reachable app for exposed secrets, browser protections, authentication issues and database access problems. A standard scan typically takes a few minutes; blocked requests or incomplete coverage are reported.
Get Actionable Results
Receive a detailed report with prioritized vulnerabilities, severity ratings, and step-by-step remediation guidance with code examples specific to Cursor.
Common Questions About Cursor Security
What does a VAS scan of a Cursor app check?
VAS checks the deployed pages, scripts and endpoints it can reach for issues including secret detection, code security, database security, security headers. The report records findings and coverage limits; it does not certify the whole app as secure.
What will I receive in the report?
Findings include severity, supporting evidence and remediation guidance. Your first scan is free, with issue counts and one finding revealed in detail. Paid report access unlocks every finding. Use Export for AI to bring available findings into your coding tool, review the proposed changes and retest.
Can a scan verify every permission and private workflow?
No. Coverage depends on reachable pages, discovered endpoints and enabled checks. Configure a test login for supported authenticated checks. Review source code and business-specific permissions separately. Zero findings does not prove an app is secure.
Does VAS change my code or database policies?
VAS provides recommendations, not automatic fixes. Adapt any suggested policy or code change to your data model, test that permitted users still have access and that other users do not, then rescan. Read checks alone cannot confirm insert, update or delete permissions.
What should I know before scanning a production app?
Only scan apps you own or have permission to test. Scan requests can trigger firewall rules, logs and rate limits. Review enabled checks, and use staging or dedicated test accounts for sensitive workflows. Active tests, where enabled, need separate care because they can make changes.
Remediation Playbook for Cursor
Priority-ordered fixes for the specific findings we see in Cursor apps. Critical items close data-exposure gaps; high items prevent compromise; medium items reduce attack surface. Applies to apps using Supabase (Postgres + RLS), the dominant Cursor stack.
1. Prompt Injection in MCP Servers
Why it matters: Malicious content in MCP tool responses can execute arbitrary commands.
How to close it: Review MCP server sources. Avoid untrusted MCP integrations. Watch for suspicious tool calls.
2. Workspace Trust Exploitation
Why it matters: Malicious .cursor/rules files execute when opening untrusted projects.
How to close it: Enable Workspace Trust in settings. Review .cursor/ files before opening projects.
3. Code Suggestion Security Flaws
Why it matters: AI suggests vulnerable patterns: SQL injection, hardcoded secrets, weak auth.
How to close it: Review all AI suggestions critically. Run security scans on generated code.
4. Privacy and Code Exfiltration
Why it matters: Code sent to AI servers may expose proprietary logic or secrets.
How to close it: Enable Privacy Mode. Use .cursorignore for sensitive files.
5. Supply Chain via Package Hallucination
Why it matters: AI suggests non-existent packages that attackers could register.
How to close it: Verify all package suggestions exist. Check package reputation before installing.
Verify the fixes stuck
Rescan after deploying a fix to check whether the original finding still appears. Compare the evidence and coverage with the previous report. For permissions and private workflows, also repeat the relevant tests with authorized and unauthorized test users.
Check your Cursor app
Find observable security issues in your deployed app, review the evidence and take the next steps with your coding tool.
Start with a free scan. See issue counts and one finding in detail, then decide whether you need full report access.
More on Cursor Security
Every angle of Cursor security, from the specific findings we detect to step-by-step fixes.
Cursor Security Risks
Specific risks we find in Cursor apps, with real-world examples.
Cursor Security Issues
Issues grouped by severity with detection and fix steps.
Cursor Best Practices
Remediation playbook derived from Cursor's actual failure modes.
Is Cursor Safe?
Honest assessment of Cursor's production readiness.
Cursor Security Checklist
Pre-launch checklist covering every finding class for Cursor.
How to Secure Cursor Apps
Step-by-step hardening guide for Cursor deployments.
Can Cursor Apps Be Hacked?
Attack vectors specific to Cursor and how they get exploited.
What People Say About Cursor Security
Community sentiment on Cursor security, compared with our scan data.
Cursor with your database
The security gaps we find depend on which database sits behind Cursor.