Your site has vulnerabilities.
Find them first.
Fast scan covers a limited set of checks. Sign up for full coverage and continuous monitoring.
40K+
Users worldwide
50M+
Scans completed
11K+
Security scanners
Latest added scans
SeverityScan nameAdded
MediumManagement Panel Detection ScannerA Management Panel Detection Scanner is a tool or technique used to identify the management or administrative panels of web applications.
2 months agoCriticalcPanel & WHM - Authentication Bypass via Session-File CRLF Injection
4 months agoMediumAI Rule Artifact File Disclosure ScannerThis scanner detects the use of AI Development Tools File Disclosure in digital assets. AI rule and instruction files such as CLAUDE.md, .cursorrules, and AGENTS.md may be publicly accessible on web servers, exposing sensitive system architecture, prompt instructions, and internal development conventions. Identifying and securing these files is critical to preventing unintended information disclosure.
5 months agoHighDNS MX Record LookupDNS MX Record Lookup
5 months agoInfoFree URL Fuzzer Online (TR Wordlist)Scan your web app for sensitive URLs (files or directories) with the TR Wordlist and make sure there are no publicly accessible URLs that you don’t want.
5 months agoEvery vulnerability.
Clearly explained.
app.s4e.io / scan-reports
Scan Reports
| Target | Port | Name | Severity | Status | Source | Last Detected | Action | |
|---|---|---|---|---|---|---|---|---|
| demo.s4e.io | 80 | SQL Injection | Critical | Open | Manual Scan | 15 Apr 2026 23:41 | ··· | |
| demo.s4e.io | 443 | Exposed .env file | Critical | Open | Continuous Scan | 15 Apr 2026 23:40 | ··· | |
| api.demo.s4e.io | 443 | Reflected XSS | High | Re-Opened | Continuous Scan | 15 Apr 2026 23:39 | ··· | |
| demo.s4e.io | 443 | Outdated jQuery CVE-2019-11358 | High | Open | Continuous Scan | 15 Apr 2026 23:38 | ··· | |
| admin.demo.s4e.io | 80 | Directory Listing Enabled | Medium | Open | Continuous Scan | 15 Apr 2026 23:37 | ··· | |
| demo.s4e.io | 443 | Missing HSTS Header | Medium | Open | Continuous Scan | 15 Apr 2026 23:36 | ··· | |
| demo.s4e.io | 443 | Subdomain Finder Online | Informational | Open | Continuous Scan | 15 Apr 2026 23:35 | ··· |
+39 more findings in the full report
This is what S4E.io found on a public demo domain in a few hours.
Scan your domain free →Security For Everyone.
Professional-grade security scanning accessible to all from solo developers to enterprise teams. No expertise required.
Free for all.
Start scanning immediately. No credit card, no account, no waiting.
14.000+ checks.
Open ports, CVEs, misconfigurations, exposed credentials the most comprehensive scan available.
Zero setup.
No agents. No config. No DevOps. Enter a domain and you're protected in seconds.
“
S4E.io found a SQL injection we'd had for 8 months.
We fixed it in an afternoon.
Our pentest company missed it entirely.
Alex K.CTO, SaaS Startup