Automate custom vulnerability detection and map internet-exposed assets at scale.
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Tracked since2026
0 reviews trackedThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
Fast vulnerability scanner
Biggest con
Learning curve
TL;DR - Nuclei
- Automates custom vulnerability detection using security templates.
- Maps internet-exposed assets and monitors cloud environments (AWS, GCP, Azure, Cloudflare).
- Offers a cloud platform for scaling security operations with integrations and APIs.
Pricing: Free plan available
Best for: Growing teams
What is Nuclei?
Nuclei is an open-source security scanner that helps organizations discover and understand their attack surface by mapping internet-exposed assets. It allows users to create and automate custom security templates to detect vulnerabilities efficiently. Nuclei also provides a real-time vulnerability feed to keep users updated with trending exploits.
For organizations, Nuclei offers a cloud platform with advanced automation capabilities. It can connect and monitor AWS, GCP, Cloudflare, and Azure accounts for security vulnerabilities. The platform supports team integrations with existing ticketing and alerting tools, and provides comprehensive REST APIs for building custom security workflows. It also caters to internal network security with automated vulnerability assessment and monitoring, and offers enterprise security features like SAML SSO and IP whitelisting.
Available on: Web
Pros & Cons
Pros
- Fast vulnerability scanner
- Template-based
- Open source
- Active community
- Good for security
Cons
- Learning curve
- False positives
- Template quality varies
- CLI focused
- Not for beginners
Key Features
Vulnerability scannerTemplate-basedFast scanningCustom templatesAPI supportOpen source
Pricing Plans
Pricing checked Jul 14, 2026
Free
Free
- Open source
- Security scanner
- Template-based
- Community templates
Reviews
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Nuclei FAQ
How does Nuclei help organizations manage their internet-exposed assets?
Nuclei maps internet-exposed assets to help organizations discover and understand their attack surface. Its cloud platform can connect and monitor AWS, GCP, Cloudflare, and Azure accounts for security vulnerabilities, providing a comprehensive view of external exposures.
What kind of user benefits most from Nuclei's features?
Nuclei is best suited for security teams and developers who need to automate custom vulnerability detection and manage security at scale. Its CLI-focused nature and template-based system are beneficial for users comfortable with command-line interfaces and custom scripting.
How does Nuclei compare to CloudSploit for vulnerability detection?
Nuclei is an open-source, template-based vulnerability scanner known for its speed and active community, allowing for custom security template creation. CloudSploit, by contrast, focuses on cloud security posture management, though both aim to identify security vulnerabilities.
What are the main trade-offs when implementing Nuclei for security scanning?
Nuclei has a learning curve and is primarily CLI-focused, making it less ideal for beginners. Users may also encounter false positives, and the quality of community-contributed templates can vary, requiring careful validation.
How is Nuclei priced?
Nuclei is available on a free tier, allowing users to start with basic functionality. Paid plans are offered for those requiring more extensive usage and access to advanced features, such as enterprise security capabilities and expanded automation.
Can Nuclei integrate with existing security workflows?
Yes, Nuclei supports team integrations with existing ticketing and alerting tools. It also provides comprehensive REST APIs, enabling users to build custom security workflows and connect with other systems for enhanced automation.
Does Nuclei provide real-time updates on new security threats?
Yes, Nuclei offers a real-time vulnerability feed. This feature keeps users updated with trending exploits and emerging security threats, allowing for proactive detection and response.
Source: nuclei.projectdiscovery.io