rust-fuzz/cargo-fuzz

Health v2 · maintenance only

Adoption not part of the score

1888 stars · 132 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

cargo-fuzz is a Cargo subcommand that makes it easy to fuzz test Rust code with libFuzzer. It scaffolds fuzz targets, runs them, minimizes failing inputs and corpora, and generates coverage reports.

Use cases

• fuzz test my rust crate
• find crashes and panics in rust code with libfuzzer
• minimize a failing fuzz input
• shrink my fuzzing corpus
• generate code coverage for a fuzz target
• set up a fuzzing harness for a rust library

When to choose

• you maintain a Rust crate and want coverage-guided fuzzing with minimal setup
• you need input or corpus minimization for reported crashes
• you want coverage reports for fuzz targets on Linux or macOS

When to avoid

• you need to fuzz on Windows, since libFuzzer sanitizer support is Unix-only
• you cannot use a nightly Rust compiler or lack a C++11 compiler
• you want to fuzz non-Rust code or use fuzzers other than libFuzzer

Facets

cli-tool · maturity active

fuzzing testing cli developer-tools testing developer-tools security rust cli libfuzzer cargo-subcommand coverage-guided-fuzzing sanitizers rust command-line linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="rust-fuzz/cargo-fuzz")