# off-by-slash

off-by-slash is a Penetration Testing product. It runs on-premises. Pricing is free.

A Burp Suite extension that detects NGINX alias traversal vulnerabilities by analyzing HTTP traffic patterns to identify path traversal misconfigurations.

Checked October 2026.

## What is off-by-slash?

off-by-slash is a Burp Suite extension that identifies alias traversal vulnerabilities in NGINX configurations through automated analysis of HTTP requests and responses.

The extension operates by examining web traffic patterns to detect potential path traversal issues that arise from NGINX alias directive misconfigurations. These misconfigurations can allow attackers to access files and directories outside of the intended web root.

The tool integrates directly with Burp Suite's proxy functionality, enabling security professionals to test NGINX configurations at scale during web application assessments. It analyzes server responses to identify indicators of successful alias traversal attempts.

The extension focuses specifically on NGINX server configurations and their potential security weaknesses related to file path handling and directory access controls.

Tags: Misconfiguration

## Where it fits in your security program (NIST CSF 2.0)

- [Detect](https://cybersectools.com/guides/building-detect-program-small-team): helps you spot attacks and unusual activity.

## Quick facts

- Category: [Offensive Security](https://cybersectools.com/categories/offensive-security-testing) · [Penetration Testing](https://cybersectools.com/categories/pentesting-tools)
- Deployment: On-Premises
- Company size fit: SMB, Mid-Market, Enterprise
- Pricing model: Free
- GitHub stars: 263
- Website: github.com

## off-by-slash FAQ

### What is off-by-slash?

off-by-slash is a product in the Penetration Testing category. It covers Misconfiguration.

### What is the pricing for off-by-slash?

off-by-slash is free. Download and setup instructions are at https://github.com/bayotop/off-by-slash/.

### What are alternatives to off-by-slash?

Alternatives to off-by-slash listed on CybersecTools:

1. [Cyver Pentest Management Platform](https://cybersectools.com/tools/cyver-pentest-management-platform) - Pentest management platform for reporting, project mgmt & client collaboration (Commercial)
2. [Synack Sara](https://cybersectools.com/tools/synack-agentic-ai) - AI-powered autonomous penetration testing platform with multi-agent system (Commercial)
3. [ImmuniWeb® Continuous Penetration Testing](https://cybersectools.com/tools/immuniwebr-continuous-penetration-testing) - Continuous pentesting service monitoring web apps & APIs for code changes (Commercial)
4. [Vulnetic Penetration Testing](https://cybersectools.com/tools/vulnetic-penetration-testing) - AI-powered automated penetration testing platform for web apps and networks (Commercial)
5. [Prancer SwarmHack™ AI Pentesting](https://cybersectools.com/tools/prancer-swarmhacktm-ai-pentesting) - AI-native multi-agent pentesting engine for autonomous vulnerability discovery (Commercial)

Compare all off-by-slash alternatives at [https://cybersectools.com/alternatives/off-by-slash](https://cybersectools.com/alternatives/off-by-slash)

### What deployment and organization size does off-by-slash fit?

off-by-slash is available as on-premises. It is listed for smb, mid-market and enterprise organizations. It is free.

## Compare off-by-slash with similar solutions

- [off-by-slash vs Cyver Pentest Management Platform](https://cybersectools.com/compare/cyver-pentest-management-platform-vs-off-by-slash)
- [off-by-slash vs Synack Sara](https://cybersectools.com/compare/off-by-slash-vs-synack-agentic-ai)
- [off-by-slash vs ImmuniWeb® Continuous Penetration Testing](https://cybersectools.com/compare/immuniwebr-continuous-penetration-testing-vs-off-by-slash)

All alternatives to off-by-slash: [/alternatives/off-by-slash](https://cybersectools.com/alternatives/off-by-slash)

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Source: https://cybersectools.com/tools/off-by-slash

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