Nuclei
Template-driven scanner for thousands of known vulnerabilities.
What it does
Nuclei checks your site against a large, community-maintained library of templates, each describing a specific known vulnerability, exposure, or misconfiguration — from unpatched CVEs to exposed panels, default credentials, and leaked config files.
What data you get
A precise list of exactly which known issues matched on your site, each with the matched URL, the template reference, and a severity rating.
Why it matters to your site
The majority of real-world breaches exploit already-published issues. This tells you, fast, whether your site is exposed to any of the known problems attackers are actively scanning the internet for.
More in this category
Other infrastructure tools
Nikto
Long-standing web server scanner for dangerous files and misconfig.
Observatory
Grades your site's security headers and configuration.
Jaeles
Flexible signature-based scanner for automated vulnerability checks.