Owner

googleprojectzero

3 indexed repositories · View on GitHub

fuzzilli
A JavaScript Engine Fuzzer

Swift · 2345 stars
Jackalope
Binary, coverage-guided fuzzer for Windows, macOS, Linux and Android

C++ · 1380 stars
TinyInst
A lightweight dynamic instrumentation library

C++ · 1356 stars

Beginner friendly Everything

Open All

Crash Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

googleprojectzero/fuzzilli#556 · Opened May 5, 2026
The difference between WinAFL and Jackalope Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/Jackalope#72 · 3 comments · Opened Apr 25, 2026
fuzzying 2M+ consistent crash with this same instruction Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

googleprojectzero/fuzzilli#555 · Opened Apr 20, 2026
Fatal error: Unknown frame type in `DiffOracle.parseFrameType` during differential execution (DumplingDiffOracle) Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

googleprojectzero/fuzzilli#552 · Opened Apr 14, 2026
Assertion failure in scheduleCorpusImport with --jobs>=2 Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

googleprojectzero/fuzzilli#551 · 1 comment · Opened Apr 11, 2026
`patch_module_entries` is a no-op Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

googleprojectzero/TinyInst#95 · 2 comments · Opened Mar 12, 2026
NJS Fuzz BUILD Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

googleprojectzero/fuzzilli#548 · 1 comment · Opened Feb 10, 2026
Dictionary format Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

googleprojectzero/Jackalope#71 · 3 comments · Opened Feb 5, 2026
Large RLIMIT_NOFILE causes application hang Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

googleprojectzero/fuzzilli#540 · 1 comment · Opened Nov 13, 2025
Build Failure on Linux (Swift 5.10.1): [[ Missing Darwin APIs sequence counting and type errors Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#539 · 2 comments · Opened Nov 13, 2025
ran into gn issue `No value named "exec_script_whitelist" in scope "build_dotfile_settings"` building fuzzilli in Docker Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#537 · Opened Nov 4, 2025
Assertion failure in `ProgramBuilder.swift:2003` when fuzzing SpiderMonkey Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#533 · 1 comment · Opened Oct 16, 2025
Make WASM Function Signature Support `ref concrete heap type` Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

googleprojectzero/fuzzilli#525 · 1 comment · Opened Sep 8, 2025
How to generate coverage.txt normally when instrumenting a continuously running background process Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/TinyInst#90 · 3 comments · Opened Aug 22, 2025
Test Corpus minimization using dry_run Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

googleprojectzero/Jackalope#68 · 6 comments · Opened Jul 7, 2025
Don't start fuzzilli Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

googleprojectzero/fuzzilli#517 · 1 comment · Opened Jul 6, 2025
Odd ubsan issue when building on macOS Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#516 · Opened Jul 3, 2025
Questions about ExplorationMutator Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

googleprojectzero/fuzzilli#508 · Opened Apr 2, 2025
All unique samples discarded Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/Jackalope#67 · 3 comments · Opened Mar 23, 2025
Optimizing weights through the MAB algorithm Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

googleprojectzero/fuzzilli#506 · 2 comments · Opened Mar 21, 2025
Crash Count Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/Jackalope#64 · 1 comment · Opened Mar 18, 2025
User/homedir expansion doesn't work Open

Difficulty 2/5 1-3 hours Newbie friendliness 40/100

googleprojectzero/fuzzilli#504 · 1 comment · Opened Mar 2, 2025
Windows Support Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

googleprojectzero/fuzzilli#503 · 1 comment · Opened Feb 25, 2025
Compile error Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#499 · 3 comments · Opened Feb 8, 2025
The comment incorrectly describes the direction of anonymous shared memory() usage Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

googleprojectzero/fuzzilli#495 · Opened Feb 2, 2025
Quick fix for fuzzying iOS on MacOS ? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

googleprojectzero/Jackalope#61 · 4 comments · Opened Feb 1, 2025
Mapping identifier names based on variable declaration kind Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

googleprojectzero/fuzzilli#494 · Opened Jan 23, 2025
Crash on Wsl2 Ubuntu 22.04 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

googleprojectzero/fuzzilli#493 · 2 comments · Opened Jan 20, 2025
Consider introducing `reassignedInputs` section of an Instruction's inouts Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

googleprojectzero/fuzzilli#492 · Opened Jan 3, 2025
Experiment with JavaScriptLifter inlining heuristic that tries to avoid additional brackets Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

googleprojectzero/fuzzilli#491 · Opened Dec 31, 2024
Allow arbitrary expressions in object and class fields Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#490 · Opened Dec 31, 2024
Distinguish between function expressions and function declarations Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#489 · Opened Dec 31, 2024
JSLifter Nested String Lifting Bug Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

googleprojectzero/fuzzilli#487 · Opened Dec 30, 2024
Lack of LoadGlobal Opcode despite documentation Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

googleprojectzero/fuzzilli#484 · 2 comments · Opened Dec 24, 2024
Spidermonkey, Crash Case fails Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#482 · 1 comment · Opened Dec 14, 2024
Lifting Problem from FuzzIL to JS Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#480 · 1 comment · Opened Dec 7, 2024
Code Generation of complex parameter types Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

googleprojectzero/fuzzilli#459 · Opened Nov 7, 2024
Problems related to tracking data dependencies during fuzzing Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

googleprojectzero/fuzzilli#457 · 4 comments · Opened Oct 28, 2024
Bugfix + Feature Request for Compiler/Parser Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

googleprojectzero/fuzzilli#456 · Opened Oct 27, 2024
Feature problem: yieldEach Open

Difficulty 3/5 1-2 days Newbie friendliness 40/100

googleprojectzero/fuzzilli#453 · 4 comments · Opened Oct 14, 2024
Feature problem: Cyclic __proto__ value Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#452 · 2 comments · Opened Oct 14, 2024
Feature problem: Top-level prototype assignment Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#451 · 2 comments · Opened Oct 14, 2024
Problem Compiling JSC using fuzzbuild.sh Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#450 · 2 comments · Opened Oct 10, 2024
server feature expected command line ? Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

googleprojectzero/Jackalope#60 · 1 comment · Opened Oct 1, 2024
about Instruction flags set .noRemovable Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

googleprojectzero/fuzzilli#446 · Opened Sep 13, 2024
Switch Case Problem Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

googleprojectzero/fuzzilli#441 · Opened Aug 13, 2024
Android running error: Could not apply memory protection Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

googleprojectzero/TinyInst#83 · 1 comment · Opened Aug 9, 2024
Improve FuzzIL Compiler Open

enhancement good first issue

Difficulty 5/5 Over a week Newbie friendliness 30/100

googleprojectzero/fuzzilli#437 · 1 comment · Opened Jul 22, 2024
Fuzzer quits without saving crash Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

googleprojectzero/Jackalope#58 · 2 comments · Opened Jun 4, 2024
Some features miss Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

googleprojectzero/fuzzilli#433 · 1 comment · Opened May 13, 2024

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