Beginner·12 min read·Updated 2026-10-15

How to Check If Your Website Has Security Vulnerabilities

Original WeSecureX guide for authorized testing of sites you own. Linked Sources are citations for verification - not copied articles. Ads are not served on this page.

Discovering security vulnerabilities on your website before cybercriminals exploit them is a foundational component of modern web operations. However, vulnerability testing must always follow an authorized, systematic methodology. Scanning websites without explicit authorization can trigger legal liability and disrupt live services. This guide outlines a step-by-step authorized workflow for scanning your own web applications, triaging identified security flaws, and maintaining continuous vulnerability tracking using the [WeSecureX Security Platform](/scanner).

Quick Answer

Verify domain ownership, configure staging or production scan scopes, run an authorized vulnerability scan covering OWASP Top 10 risks, prioritize critical and high findings, apply code patches, and rescan to verify vulnerability closure.

Key Takeaways
  • Vulnerability checks must always be authorized on domains you own or operate.
  • DAST scanners discover runtime security flaws by sending simulated payload vectors.
  • Prioritize findings based on CVSS severity scores and exploitability.
  • Re-scanning after patching guarantees that vulnerability fixes are effective.
Visual Diagram · Authorized Website Vulnerability Assessment Workflow
1

Domain Authorization

Verify explicit domain ownership via DNS TXT record or meta tag confirmation.

2

Automated DAST Scan

Launch comprehensive vulnerability scan targeting XSS, SQLi, TLS, and security headers.

3

Triage & SLA Assignment

Filter false positives and assign remediation tickets to engineering teams with strict SLAs.

4

Patch & Rescan

Apply code fixes, re-run targeted vulnerability scans, and update risk tracking metrics.

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Step 1 - Domain Authorization & Scope Definition

WeSecureX Attack Surface Discovery identifying target domains and cloud assets
WeSecureX Attack Surface Discovery identifying target domains and cloud assetsWeSecureX Platform View

Before launching any security scanning tool, confirm that you possess explicit written authorization or administrative ownership over the target domain. Scanning third-party websites without permission violates computer abuse laws in most jurisdictions.

Define clear testing boundaries:

  • Production vs. Staging: Prefer conducting initial aggressive scans in staging environments that mirror production configurations without risk of impacting real users.
  • WAF & Rate-Limit Allowlisting: Notify your Web Application Firewall (WAF) or hosting provider, allowlisting the scanner's IP address to prevent automated blocking during the audit.
  • Domain Ownership Verification: Confirm ownership via DNS TXT records or HTML file placement before initiating scans.

Step 2 - Launching Authorized DAST Vulnerability Scans

WeSecureX Website Vulnerability Scanner running automated DAST crawls
WeSecureX Website Vulnerability Scanner running automated DAST crawlsWeSecureX Platform View

Execute an automated Dynamic Application Security Testing (DAST) scan using a specialized scanner like WeSecureX Vulnerability Scanner. The scanner evaluates your target web pages against thousands of known security vulnerability signatures:

  • Client-Side Vulnerabilities: Reflected XSS, DOM XSS, Clickjacking, and CSP header bypasses.
  • Server-Side Vulnerabilities: SQL Injection, Command Injection, Path Traversal, and SSRF.
  • Configuration Flaws: Missing HTTP security headers, outdated TLS ciphers, and exposed sensitive files (.git, .env).

Step 3 - Triaging Findings & Verifying Fixes

Once a scan completes, export the vulnerability findings and prioritize remediation based on CVSS severity scores:

  • Critical & High Severity (Fix within 48h - 7 days): SQLi, RCE, Stored XSS, and unauthenticated administrative access.
  • Medium & Low Severity (Fix within 30 days): Missing security headers, weak TLS ciphers, and verbose error messages.

Apply necessary code fixes, redeploy to your staging server, and trigger a verification rescan to confirm that the vulnerability is permanently resolved.

Tip

Never mark a vulnerability as 'Fixed' without running a verification rescan to prove that the payload vector no longer executes.

Step 4 - Auditing HTTP Security Headers & TLS Cryptographic Posture

WeSecureX SSL Certificate Checker auditing TLS 1.3 ciphers and certificate expiry
WeSecureX SSL Certificate Checker auditing TLS 1.3 ciphers and certificate expiryWeSecureX Platform View

Beyond application code flaws, misconfigured web servers frequently leak sensitive data or leave users unprotected against transport-level attacks.

Hands-On Cryptographic & Header Auditing Workflow:

  1. Inspect Response Headers in DevTools: Open your browser's Developer Tools (F12), navigate to the Network tab, click the initial HTML document request, and review Response Headers. Verify the presence of Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options: nosniff, and X-Frame-Options: DENY.
  2. Verify TLS 1.3 Protocol Negotiation: Run openssl s_client -connect yourdomain.com:443 -tls1_3 in your terminal to confirm that your server successfully negotiates TLS 1.3 with Perfect Forward Secrecy (PFS).
  3. Audit DNS CAA Records: Check that your DNS zone contains Certificate Authority Authorization (CAA) records restricting which CAs are permitted to issue certificates for your domain.

Alternatively, execute an automated cryptographic evaluation in seconds using the WeSecureX Free Scanner.

bash
# Inspect HTTP Security Headers via curl
$ curl -sI https://example.com | grep -iE 'strict-transport|content-security|x-frame|x-content'

strict-transport-security: max-age=63072000; includeSubDomains; preload
content-security-policy: default-src 'self'; script-src 'self' 'nonce-...'
x-frame-options: DENY
x-content-type-options: nosniff

Step 5 - Building a Continuous Vulnerability Management Pipeline with WeSecureX

WeSecureX Vulnerability Catalog tracking triaged findings and verification retests
WeSecureX Vulnerability Catalog tracking triaged findings and verification retestsWeSecureX Platform View

Conducting an isolated, one-off security scan provides only a temporary snapshot of your security posture. As development teams commit code daily and dependencies evolve, automated continuous scanning is mandatory.

The WeSecureX Continuous Assurance Lifecycle:

  • Scheduled Automated Scans: Configure weekly recurring scans on production and nightly scans on staging branches inside the WeSecureX Dashboard.
  • Remediation SLA Tracking: Automatically assign remediation deadlines based on CVSS severity (48 hours for Critical, 7 days for High, 30 days for Medium) inside the Vulnerabilities Dashboard.
  • Executive Audit Exports: Export formal PDF audit scorecards mapped to SOC 2, ISO 27001, and PCI DSS compliance baselines for management and external auditors.
  • One-Click Re-Scan Verification: After deploying a fix, click 'Verify Fix' to trigger an automated targeted probe that cryptographically verifies the vulnerability is closed before closing the issue.
bash
# Automated CI/CD Regression Check via WeSecureX API
$ curl -X POST https://api.wesecurex.com/v1/scans \
    -H "Authorization: Bearer $WESECUREX_API_KEY" \
    -d '{"target": "https://staging.example.com", "profile": "owasp-top-10"}'

{"scan_id": "wsx_scan_8921a", "status": "QUEUED", "estimated_duration": "45s"}

Apply it with WeSecureX

Here is the exact path to check a site you own in WeSecureX, matching the steps described above.

Steps in the product

text
1. Add the hostname and verify ownership
2. Start a scan from the dashboard
3. Open the findings list for that target
What the finding shows

Each confirmed check lists the request sent and the response that matched, so you can reproduce it before changing code.

Then fix and confirm

text
Apply the fix in your app, rescan the same host,
and compare the new report with the old one.

After the rescan

A finding that no longer appears on the rescan is closed for that scan. One that remains means the response still matches and the fix did not land.

Checks that belong with this topic

  • Confirm domain ownership via DNS TXT or HTML file verification.
  • Allowlist scanner IP addresses in Web Application Firewalls (WAF).
  • Execute an authorized DAST vulnerability scan using [WeSecureX Scanner](/scanner).
  • Prioritize Critical and High severity findings for immediate patch deployment.
  • Re-run verification scans after applying code updates.
  • Track open vulnerability trends inside the [WeSecureX Dashboard](/vulnerabilities).

Actionable Checklist

WeSecureX Platform · Scanner Engine

Automated Vulnerability Scanner

Launch targeted or full-domain security audits to detect OWASP Top 10 vulnerabilities automatically.

Includes: OWASP Top 10 automated test suites · Real-time severity scoring (CVSS v3.1) · Instant remediation code snippets

Frequently Asked Questions

It is legal ONLY if you own the website or have explicit written authorization from the owner. Scanning third-party websites without permission violates laws such as the US Computer Fraud and Abuse Act (CFAA).

SAST (Static Application Security Testing) analyzes source code files from the inside. DAST (Dynamic Application Security Testing) tests running web applications from the outside by sending real HTTP requests.

Well-designed scanners allow configuring request concurrency and rate limits to prevent server overload. Running scans in staging environments completely avoids production impact.

You can start an authorized domain scan immediately using the [WeSecureX Vulnerability Scanner](/scanner) to receive a complete security report.

Authoritative Sources & References

  • OWASP Vulnerability Scanning GuideOWASP (official)
    View Source

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