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Tech riderRev. 30 Sept 2026

OSS-Fuzz

Ch 116.9of 27 Fuzz Testing Software
  1. 1Runs onWeb
  2. 2CostsFree plan
  3. 3Input generation methodsmutation
  4. 4Target typessource-code fuzz targets; untrusted user or network inputs; complex input formats
  5. 5Coverage guidanceYes
  6. 6Crash triageYes
  7. 7Execution modecloud
  8. 8Supported languagesC/C++, Rust, Go, Python, Java/JVM, JavaScript, Lua
8 lines stated Written from the maker's own pages: google.github.io
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The OSS-Fuzz homepage

Overview

OSS-Fuzz is ranked #11 of 27 in fuzz testing software on Specifiction. It runs on Web. There is a free plan.

OSS-Fuzz plans and pricing

All plans
OSS-Fuzz Free The official site describes it as a free service. For open-source projects · acceptance requires a significant user base and/or criticality to global IT infrastructure google.github.io · 30 Sept 2026

Compared on fuzz testing software

Free plan
Yesgoogle.github.io
Input generation methods
mutationgoogle.github.io
Target types
source-code fuzz targets; untrusted user or network inputs; complex input formatsgoogle.github.io
Coverage guidance
Yesgoogle.github.io
Crash triage
Yesgoogle.github.io
Execution mode
cloudgoogle.github.io
Supported languages
C/C++, Rust, Go, Python, Java/JVM, JavaScript, Luagoogle.github.io
CI/CD support
Yesgoogle.github.io

Facts

Purpose
OSS-Fuzz runs fuzzers for open-source projects and privately alerts developers to bugs it detects.google.github.io · 30 Sept 2026
Testing approach
It combines modern fuzzing techniques with scalable, distributed execution to improve open-source software security and stability.google.github.io · 30 Sept 2026
Fuzzing engines
The documentation lists libFuzzer, AFL++, Honggfuzz and Centipede, with Centipede identified as experimental in the FAQ.google.github.io · 30 Sept 2026
Sanitizers
OSS-Fuzz runs fuzzing engines in combination with sanitizers; AddressSanitizer and UndefinedBehaviorSanitizer are the default supported sanitizers described in the setup guide.google.github.io · 30 Sept 2026
Languages
The site lists C/C++, Rust, Go, Python, Java/JVM, JavaScript and Lua as supported languages.google.github.io · 30 Sept 2026
Architectures
OSS-Fuzz supports fuzzing x86_64 and i386 builds, with i386 not enabled by default.google.github.io · 30 Sept 2026
Build setup
Projects provide a Dockerfile and build.sh script to define the build environment and produce fuzz targets.google.github.io · 30 Sept 2026
Issue reporting
By default, issues are filed in the OSS-Fuzz tracker; projects can opt to mirror them on GitHub.google.github.io · 30 Sept 2026
Access requirement
Project contacts need a Google account for full access to ClusterFuzz, including crash reports and fuzzer statistics.google.github.io · 30 Sept 2026
Eligibility
A project seeking acceptance must be open source and have a significant user base and/or be critical to global IT infrastructure.google.github.io · 30 Sept 2026
Build limit
The setup guide says OSS-Fuzz allows up to four builds per day and builds once per day by default.google.github.io · 30 Sept 2026
Resource limit
The guide states that builders have 250 GB of disk space, including the operating system, and builds must stay below that peak usage.google.github.io · 30 Sept 2026
Alternative deployment
Projects that do not qualify for OSS-Fuzz, including closed-source projects, can run their own ClusterFuzz or ClusterFuzzLite instances.google.github.io · 30 Sept 2026
Maker history and location
Google says it was officially born in August 1998 and that its current headquarters, the Googleplex, is in Mountain View, California.about.google · 30 Sept 2026

Company

Founded
2016google.github.io · 23 Sept 2026

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