Cline Security Scanner
Built your app with Cline? Open-source coding agents move fast. Make sure they didn't skip security along the way.
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.
Top 4 Security Issues in Cline Apps
Unrestricted System Access
Cline runs commands directly in your terminal. In auto-approve mode, it can install packages and modify configs without human review.
Context-Leaked Secrets
Cline reads your project files for context. If code contains API keys, the agent may propagate them into new files.
Missing Database Security
When Cline creates database schemas, RLS policies and access controls are often omitted.
Insecure Dependency Installation
Cline installs npm packages autonomously. Without review, it may install outdated or compromised packages.
Where Security Breaks in Cline Apps
Built on Supabase (Postgres + RLS), Cline applications share a recognizable fingerprint, which means attackers and automated scanners find them the same way every time. Based on real vulnerability patterns in Cline deployments, the breakdown is 1 critical-impact issue, 2 high-impact, and 1 medium-or-lower.
Unrestricted System Access
Cline runs commands directly in your terminal. In auto-approve mode, it can install packages and modify configs without human review.
Fix: Scan your deployed application with a security tool that understands this stack. Address the specific findings — generic best practices don't catch platform-specific misconfigurations.
Context-Leaked Secrets
Cline reads your project files for context. If code contains API keys, the agent may propagate them into new files.
Fix: Move all secrets server-side (environment variables, serverless functions). Rotate any keys previously in frontend code. Audit bundles for leftover credentials before each deploy.
Missing Database Security
When Cline creates database schemas, RLS policies and access controls are often omitted.
Fix: Enable Row Level Security (Supabase) or Security Rules (Firebase) on every table. For custom backends, enforce authorization at the query layer — never client-side.
Insecure Dependency Installation
Cline installs npm packages autonomously. Without review, it may install outdated or compromised packages.
Fix: Run `npm audit` on every install. Verify suggested packages exist and have an established reputation before installing. Pin versions for reproducible builds.
What We Check
Secret Detection
Scans for API keys and credentials that may have been hardcoded by the agent.
Database Security
Tests for missing RLS policies, exposed tables, and insecure migrations.
Dependency Audit
Checks installed packages for known vulnerabilities and supply chain risks.
Auth & Headers
Verifies authentication implementations and HTTP security headers.
What You'll Get
Why Cline Apps Need Security Scanning
Cline is one of the most popular open-source coding agents, giving AI full control of your terminal, file system, and browser. Its power comes from unrestricted access to your development environment.
The open-source nature of Cline is a strength for transparency but doesn't guarantee the code it writes is secure. vas scans for the security issues autonomous agents commonly introduce.
How Cline Security Scanning Works
Submit Your URL
Enter your Cline application URL. Our scanner automatically detects your tech stack and configures the appropriate security checks for Cline.
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 Cline.
Common Questions About Cline Security
What does a VAS scan of a Cline app check?
VAS checks the deployed pages, scripts and endpoints it can reach for issues including secret detection, database security, dependency audit, auth & 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 Cline
Priority-ordered fixes for the specific findings we see in Cline 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 Cline stack.
1. Unrestricted System Access
Why it matters: Cline runs commands directly in your terminal. In auto-approve mode, it can install packages and modify configs without human review.
How to close it: Scan your deployed application with a security tool that understands this stack. Address the specific findings — generic best practices don't catch platform-specific misconfigurations.
2. Context-Leaked Secrets
Why it matters: Cline reads your project files for context. If code contains API keys, the agent may propagate them into new files.
How to close it: Move all secrets server-side (environment variables, serverless functions). Rotate any keys previously in frontend code. Audit bundles for leftover credentials before each deploy.
3. Missing Database Security
Why it matters: When Cline creates database schemas, RLS policies and access controls are often omitted.
How to close it: Enable Row Level Security (Supabase) or Security Rules (Firebase) on every table. For custom backends, enforce authorization at the query layer — never client-side.
4. Insecure Dependency Installation
Why it matters: Cline installs npm packages autonomously. Without review, it may install outdated or compromised packages.
How to close it: Run `npm audit` on every install. Verify suggested packages exist and have an established reputation before installing. Pin versions for reproducible builds.
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 Cline 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 Cline Security
Every angle of Cline security, from the specific findings we detect to step-by-step fixes.
Cline Security Risks
Specific risks we find in Cline apps, with real-world examples.
Cline Security Issues
Issues grouped by severity with detection and fix steps.
Cline Best Practices
Remediation playbook derived from Cline's actual failure modes.
Cline Security Checklist
Pre-launch checklist covering every finding class for Cline.
How to Secure Cline Apps
Step-by-step hardening guide for Cline deployments.