Arachni
Feature-rich, modular Ruby web application security scanner framework.
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What is Arachni?
Arachni is an open-source web application security scanner framework designed to identify vulnerabilities in web applications. It automates the process of penetration testing by systematically analyzing target websites for common security issues such as SQL injection, cross-site scripting (XSS), and insecure configurations. The tool is primarily used by cybersecurity professionals, ethical hackers, and developers to proactively assess and strengthen the security posture of their web applications. Arachni addresses the challenge of manual security testing by providing a scalable, customizable solution that integrates with existing workflows and supports both automated and guided testing scenarios. As a framework, Arachni enables users to extend its capabilities through plugins and custom rules, making it adaptable to diverse security requirements. Its Apache-2.0 license encourages community contributions and enterprise adoption, while its 1400+ GitHub stars reflect its reputation as a reliable tool in the security ecosystem. The project’s primary value lies in its ability to streamline vulnerability discovery, reducing the time and effort required for comprehensive web application audits.
How it works
Arachni is a web application security scanner framework that automates vulnerability detection in websites and web services. It replaces manual testing with programmable modules that simulate attacks and analyze responses to identify weaknesses. The tool is designed for security professionals who need to assess the integrity of web applications without deploying full penetration testing processes. Its modular architecture allows integration with CI/CD pipelines and security orchestration tools. Arachni supports automated scanning for SQL injection, XSS, CSRF, and insecure direct object references. It includes a spidering engine to map application endpoints and a rules engine to detect known vulnerabilities. Users can customize detection rules and payloads to target specific application logic.
How to use it
- 1Clone the Arachni repository from GitHub. 2. Install dependencies using RubyGems. 3. Run the scanner with a target URL and specify scan modules. 4. Review the generated report for vulnerabilities and remediation steps. Practical tips: Use the '--help' flag to explore advanced options like custom payloads or rule sets. For enterprise use, integrate Arachni with vulnerability management platforms via its API.
What it can do
- web application security scanner
Use cases
Assumptions and limitations
Assumptions
- source: https://github.com/Arachni/arachni
- license: Apache-2.0 — free to use
- privacy: Self-hosted — you control your data
Limitations
- Dual-use tool — use only with explicit authorization on systems you own or have permission to test.
- The project is archived and no longer actively maintained, limiting access to updates and bug fixes
- Limited support for modern web frameworks and single-page applications
- Requires technical expertise to configure custom rules and payloads
- Scanning large applications may generate false positives requiring manual verification
Understanding the result
Feature-rich, modular Ruby web application security scanner framework.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (Apache-2.0).
- Built with
- (Arachni/arachni)
- License
- Apache-2.0
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with Arachni/arachni. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- Apache-2.0
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- Apache-2.0 License
Upstream project
Frequently asked
Is Arachni still actively developed?
Arachni's GitHub repository was archived in 2026, making it a read-only project. While its core framework remains functional, it no longer receives updates or community contributions. Users are advised to migrate to actively maintained alternatives like Spectre Scan or Apex Recon for ongoing security testing.
How does Arachni detect vulnerabilities?
Arachni uses a combination of automated scanning and rule-based analysis. It first maps the target application's structure using a spidering engine, then systematically tests endpoints with payloads designed to trigger common vulnerabilities. The tool analyzes HTTP responses for signs of exploitation, such as unexpected database errors or modified page content, and cross-references findings with its internal rule set.
How do I scan a website for SQL injection?
To scan for SQL injection, first clone the Arachni repository and install dependencies. Then run the scanner with the target URL and enable the SQL injection module: 'arachni http://example.com --scan-sql'. The tool will automatically test input fields with crafted payloads and report any successful exploitation attempts.
How does Arachni compare to other scanners?
Arachni differs from tools like OWASP ZAP and Nikto by emphasizing modular, customizable scanning logic. Unlike ZAP's GUI-focused approach, Arachni prioritizes scriptability for integration with automated workflows. However, its archived status and limited feature set make it less suitable than modern alternatives like Spectre Scan for comprehensive, up-to-date vulnerability assessments.
What should I do if Arachni fails to detect a vulnerability?
If Arachni misses a vulnerability, consider adjusting the scan configuration by adding custom payloads or rules. Verify that the target application's firewall or WAF isn't blocking scan requests. For complex issues, combine Arachni with manual testing tools like Burp Suite. If the tool is no longer maintained, explore migration options to actively supported platforms.