Detect Reflected and Stored Cross-Site Scripting
XSS is still in the OWASP Top 10 because it hides in every template, every form field, every JSON response. This scanner fuzzes common injection points with a battle-tested payload set and verifies execution, not just reflection.
Try XSS Scanner
How It Works
From target input to actionable findings in three straightforward steps.
Enter a URL
Paste any URL with query parameters, or provide a form endpoint.
Payload Set
A curated XSS payload library is sent through every detected parameter with context-aware encoding.
Execution Verification
Reflection alone is not enough — the scanner checks whether the payload actually executes in the response context.
Key Capabilities
Purpose-built scanning backed by real penetration testing expertise.
Context-Aware Payloads
Different payloads for HTML attribute vs body vs JS string vs URL contexts.
Reflected + Stored
Detects both reflected XSS (immediate) and stored (retrieved on follow-up request).
Encoding Bypass
Double-encoding, unicode, template fragments, and polyglot payloads.
DOM-XSS Hints
Flags sinks in client-side JavaScript that consume URL fragments and query parameters without sanitization.
Evidence Capture
Each finding includes the exact payload + response snippet so you can reproduce the issue.
No Install
Runs server-side. No Burp, no ZAP, no setup.
Common Use Cases
Why Use Pentestas
Security tools built by penetration testers, not just developers.
Enterprise-Grade Accuracy
Our scanning engine is built on the same methodologies our penetration testers use in manual engagements, tuned to minimize false positives and surface genuine risk.
Fast, Actionable Results
Get findings in minutes rather than days. Every result includes severity ratings, technical evidence, and clear remediation steps your team can act on immediately.
Continuous Monitoring
Schedule recurring scans from the Pentestas platform to catch regressions before they reach production. Stay ahead of new CVEs and configuration drift.
Privacy First
Your scan data is encrypted at rest and in transit. You own your data, with full control over retention and export.
Detailed Reporting
Export findings as PDF, CSV, or JSON. Feed results directly into your SIEM, ticketing system, or CI/CD pipeline through our REST API.
Instant Setup
Run scans directly from your browser. Enter a target, click scan, and receive results. Ready in under a minute.
Start scanning with XSS Scanner today
Create a free account and run your first scan in under a minute. Full platform access during your 14-day trial.