Research

Research

  • Mutation Timeline

    Following Each Change to a JavaScript Sample

    Introduction A JavaScript fuzzer rarely builds a complex sample in one step. It may change an operator, insert a statement, replace a loop body, and then make further changes[...]

  • How ASTs Change the Way You Think About JavaScript

    For vulnerability research and programmable fuzzing

    Is This Valid JavaScript? Let's analyze this JavaScript program: It looks like strange and unusual code, which raises some interesting questions: Is it valid JavaScript code? How[...]

  • Code Targeting

    Keeping Fuzzing Focused on Specific V8 Code

    Introduction Coverage-guided fuzzing is designed to find new execution paths. In targeted vulnerability research, however, we may already know which part of the JavaScript engine we want to explore.[...]

  • Fuzzing Complex JavaScript Structures

    Building complex programs without losing the research goal

    Finding the Unexpected The basic idea behind a JavaScript engine fuzzer is very simple: generate programs that the engine does not expect to execute. The difficult part[...]

  • CVE-2026-11645
    V8 Vulnerability Exploited in the Wild

    SeekZero Mutation Plans to Explore a Type Confusion

    The vulnerability and its fix The CVE-2026-11645 vulnerability in Google Chrome's V8 JavaScript engine was caused by an inconsistent transition of an object's Map. In V8, the Map[...]

  • AI Browser Vulnerability Research

    Part 2
    Teaching an LLM to Find Browser Bugs

    A large language model can understand and analyze a browser's source code. If the model is trained on patterns from known vulnerabilities, it can even detect bugs given the[...]

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