variant-analysis

Identify similar vulnerabilities across codebases using pattern-based analysis.

Updated Jan 24, 2026
One-click install
npx skills add https://github.com/amano--/call-center --skill variant-analysis-amano
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: variant-analysis
Source: https://github.com/amano--/call-center/tree/main/.gemini/antigravity/skills/trailofbits-security/variant-analysis
Command: npx skills add https://github.com/amano--/call-center --skill variant-analysis-amano

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps you systematically find similar vulnerabilities and bugs across a codebase after an initial issue has been identified, preventing their recurrence and improving overall security.

Core Features & Use Cases

  • Variant Hunting: Search for patterns of vulnerabilities beyond the exact instance found.
  • Query Building: Assist in creating or refining Semgrep and CodeQL queries for security analysis.
  • Code Auditing: Perform systematic audits by generalizing from known issues to uncover related flaws.
  • Use Case: After discovering a SQL injection vulnerability in one part of an application, use this Skill to search the entire codebase for similar patterns that might have been introduced through copy-pasting or similar coding errors.

Quick Start

Use the variant-analysis skill to find patterns similar to the provided code snippet.

Frequently Asked Questions about variant-analysis

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I find similar code vulnerabilities after discovering an initial security flaw?

Variant analysis helps you find similar code vulnerabilities by identifying patterns from a known issue and searching the entire codebase for related flaws to prevent recurrence.

What is the process for generalizing a known bug pattern for a code audit?

A code audit involves understanding the root cause of a known bug, creating an exact match for it, and iteratively generalizing the pattern to uncover similar vulnerabilities across the codebase.

Can I use this for building security queries with Semgrep and CodeQL?

Yes, variant analysis assists in creating and refining security queries for tools like Semgrep and CodeQL to systematically identify vulnerabilities and bugs across codebases.

How do I hunt for SQL injection variants introduced by copy-pasting code?

Variant hunting searches for patterns of vulnerabilities beyond the exact instance found, enabling you to detect similar SQL injection flaws introduced through copy-pasting or similar coding errors.

Does variant analysis work for large scale codebase security assessments?

Yes, variant analysis enables systematic identification of similar vulnerabilities at scale, guiding you through triaging results to ensure thorough security assessments across large codebases.

What is the best way to triage results from a variant analysis code audit?

The best way to triage variant analysis results is to iteratively generalize patterns from the root cause of the initial issue, ensuring thorough security assessments and accurate vulnerability detection.