Semgrep
Fast static analysis engine for codebases and CI/CD pipelines, matching syntactic patterns to find security vulnerabilities.
Technical Architecture & Overview
Semgrep is a fast static analysis tool that lets users write rules as ordinary-looking code patterns, then parses them and target code into ASTs for semantic matching. It runs directly in developer workflows and CI/CD pipelines to catch security bugs, secret leaks, and insecure API patterns.
Targeted Technical Use Cases
Automated code review, custom security rule authoring, and SAST scanning across polyglot codebases.
Evaluation & Trade-offs
Core Strengths
- +Fast rule evaluation running hundreds of checks in seconds.
- +Rules look like normal code, making it easy to write custom company-specific patterns.
- +Large community registry with thousands of pre-written security rules.
Trade-Offs & Limitations
- -Advanced cross-file taint analysis requires a paid commercial license.
- -Large enterprise monorepos may require tuning to eliminate noisy patterns.
Defensive Security Application
Blocking insecure code patterns (such as SQL injections and path traversals) before pull requests merge.
Frequently Asked Questions
What is Semgrep?→
Semgrep is a fast static analysis tool that lets users write rules as ordinary-looking code patterns, then parses them and target code into ASTs for semantic matching. It runs directly in developer workflows and CI/CD pipelines to catch security bugs, secret leaks, and insecure API patterns.
What is Semgrep used for?→
Automated code review, custom security rule authoring, and SAST scanning across polyglot codebases.
What are the strengths of Semgrep?→
- +Fast rule evaluation running hundreds of checks in seconds.
- +Rules look like normal code, making it easy to write custom company-specific patterns.
- +Large community registry with thousands of pre-written security rules.
What are the limitations of Semgrep?→
- +Advanced cross-file taint analysis requires a paid commercial license.
- +Large enterprise monorepos may require tuning to eliminate noisy patterns.
How is Semgrep used defensively?→
Blocking insecure code patterns (such as SQL injections and path traversals) before pull requests merge.