Website Vulnerability Scanner — Free

Most "free" vulnerability scanners hit you with one of three traps: a 7-day trial, a limit of three scans per month, or a stripped-down ruleset that hides the findings you actually need. ScanMyVibe is built as a permanent free tool — no trial, no limits on manual scans, and the same rule engine as the paid product.

A real vulnerability scanner should cover three things: (1) configuration issues — headers, cookies, TLS, CORS; (2) known CVEs — outdated libraries, vulnerable CMS plugins, unpatched servers; and (3) injection classes — XSS vectors, open redirects, SSRF hints. ScanMyVibe covers all three.

• → A01 Broken Access Control — exposed admin panels, default credentials fingerprinting, path traversal hints.
• → A02 Cryptographic Failures — weak TLS, cookie transport, mixed content, cert chain issues.
• → A03 Injection — XSS reflection surfaces, open redirects, unvalidated postMessage handlers.
• → A05 Security Misconfiguration — missing headers, verbose errors, default pages, directory listings.
• → A06 Vulnerable Components — outdated jQuery, old WordPress, vulnerable npm packages in the bundle.
• → A07 Identification and Authentication Failures — weak cookie flags, missing CSRF protections on state-changing endpoints.
• → A08 Software and Data Integrity — missing Subresource Integrity on CDN scripts, unsigned third-party loads.
• → A09 Security Logging and Monitoring Failures — missing Report-To and report-uri directives.
• → A10 SSRF — parameters that accept URLs and could be pivoted to internal services.

That is the full OWASP Top 10 coverage — for free.

Commercial vulnerability scanners like Qualys, Acunetix, Burp Suite Enterprise and Detectify cost $1,000–$10,000 per year. They are powerful, but overkill for a solo developer or a three-person SaaS. ScanMyVibe gives you 85% of the findings for $0 — and for the remaining 15%, our paid tier is $9/month, not $9,000.

Free alternatives like OWASP ZAP and Nikto are excellent but require setup, tuning, and deep security knowledge. ScanMyVibe is designed for developers who just want results: paste, scan, fix.

Read our full comparison in best website security scanners in 2026.

Every finding has four parts: a severity, a description, a fix, and a reference. Severities follow industry convention — Critical, High, Medium, Low, Info.

• → Critical — exploitation is trivial and impact is severe. Fix within hours. Examples: exposed .env, public .git, auth bypass.
• → High — real risk, fix within days. Examples: missing HSTS, weak CSP, CORS with credentials wildcard.
• → Medium — should fix within a sprint. Examples: missing Permissions-Policy, cookies without SameSite.
• → Low — hygiene, fix when convenient. Examples: Server header disclosure, missing Referrer-Policy.
• → Info — context only, not a vulnerability. Examples: TLS version detected, CDN provider.

Honesty matters. A passive HTTP scanner cannot detect: business-logic flaws (IDOR, broken state machines), authenticated vulnerabilities (admin-panel XSS, SSRF in internal APIs), or server-side bugs that do not manifest in response headers. These require an authenticated scan, a code review, or a manual pentest.

If you need authenticated scanning, our Pro plan supports crawling with a session cookie. For full manual reviews, we recommend pairing ScanMyVibe with a yearly pentest from a trusted vendor.

A scan is a snapshot. Vulnerability posture changes every time you deploy, update a dependency, or change a CDN rule. ScanMyVibe Pro runs scheduled scans and pings you on Slack the moment something regresses — a missing header, a broken cookie flag, a new CVE in a detected library.

You can also plug it into your CI with a webhook and fail builds that introduce critical findings.