Vendor Profile

Nuclei

Nuclei is a fast, template-based open-source vulnerability scanner developed by ProjectDiscovery. Built in Go for high performance, Nuclei uses YAML-based templates to define and execute vulnerability checks across web applications, networks, DNS, cloud services, and more. With over 8,000 community-contributed templates covering CVEs, misconfigurations, exposed panels, default credentials, and technology detection, Nuclei has become the preferred tool for security researchers, bug bounty hunters, and organizations wanting a highly customizable and extensible scanning engine.

Last updated

Founded
2020
Pricing
Free (open source) / ProjectDiscovery Cloud Platform from $100/month
Verify with vendor
Deployment
Open SourceCloudSelf-Hosted
Open Source Vulnerability Scanner

Key Features

+YAML-based template engine for custom checks
+8,000+ community-contributed vulnerability templates
+High-speed concurrent scanning in Go
+Multi-protocol support (HTTP, DNS, TCP, SSL)
+CI/CD pipeline integration for DevSecOps
+Headless browser support for JavaScript-heavy applications
+Automatic template updates from community repository
+Output in JSON, SARIF, and multiple reporting formats

Pros & Cons

Pros

  • +Extremely fast scanning with Go-based concurrent execution
  • +Highly customizable with easy-to-write YAML templates
  • +Massive community-driven template library covering latest CVEs
  • +Lightweight CLI tool perfect for CI/CD and automation pipelines
  • +Active development with rapid community response to new vulnerabilities

Cons

  • –Requires security expertise to interpret results and write custom templates
  • –No built-in vulnerability management workflow or dashboard
  • –Template quality varies across community contributions
  • –Limited authenticated scanning compared to enterprise scanners
  • –Not a complete vulnerability management platform — scanning engine only

Best For

Security teams and researchers wanting a fast, customizable, template-driven vulnerability scanner for web and infrastructure testing

Community & Practitioner Evidence

Open Source Activity

GitHub
Stars
21.8k
Forks
2.7k
Contributors
520
Open Issues
380
Last Push
Feb 2026

Community Sources

❓ Q&A Threads
  • →
    Nuclei questions on Stack Overflow[Stack Overflow]

User Reviews

No reviews yet. Be the first to share your experience!

As a Product Hub

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As an Alternative (8 comparisons)

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Sources & References

  1. Nuclei — Official Website & Documentation[Vendor]
  2. Nuclei Reviews on G2[User Reviews]
  3. Nuclei Reviews on TrustRadius[User Reviews]
  4. Nuclei Reviews on PeerSpot[User Reviews]
  5. projectdiscovery/nuclei — GitHub Repository[Open Source Project]
  6. Nuclei questions on Stack Overflow[Technical Q&A]

Related Comparisons & Categories

Comparison

CrowdStrike Falcon Spotlight vs Nuclei

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Comparison

Arctic Wolf vs Nuclei

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Comparison

Greenbone OpenVAS vs Nuclei

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Comparison

Qualys VMDR vs Nuclei

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Comparison

Rapid7 InsightVM vs Nuclei

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Product Hub

nuclei Alternatives

Compare alternatives to nuclei

Comparison

Microsoft Defender Vulnerability Management vs Nuclei

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Comparison

Tenable vs Nuclei

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

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