cargo-fuzz

SKILL.md

cargo-fuzz

cargo-fuzz is the de facto choice for fuzzing Rust projects when using Cargo. It uses libFuzzer as the backend and provides a convenient Cargo subcommand that automatically enables relevant compilation flags for your Rust project, including support for sanitizers like AddressSanitizer.

When to Use

cargo-fuzz is currently the primary and most mature fuzzing solution for Rust projects using Cargo.

Fuzzer
Best For
Complexity

cargo-fuzz
Cargo-based Rust projects, quick setup
Low

AFL++
Multi-core fuzzing, non-Cargo projects
Medium

LibAFL
Custom fuzzers, research, advanced use cases
High

Choose cargo-fuzz when:

Your project uses Cargo (required)

You want simple, quick setup with minimal configuration

You need integrated sanitizer support

You're fuzzing Rust code with or without unsafe blocks