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@JLLeitschuh

Jonathan Leitschuh

JLLeitschuh
Boston, MA

Jonathan Leitschuh

Open-Source Software Security Researcher

I find and report security vulnerabilities in open-source software.

I enjoy giving back to the community through OSS Security Research. It's deeply satisfying to have the opportunity to help and protect users.

The unfortunate reality is that the OSS is underfunded and there's even less invested in security research to find vulnerabilities in these critical components.

By sponsoring my work, you will be sponsoring security research into potentially critical areas of your own software stack, hidden deep within your applications.

My CodeQL driven security research currently primarily focuses on the Java ecosystem with some forays into Python and Javascript. However, my security-research strengths primarily lie in the Java ecosystem.

Notable Security Research

Other Security Disclosures

Less flashy, but were still a lot of fun to find and report!

There's even more than this though! You can find my current vulnerability findings to date in this Google Sheet here.

Other Content

I do a lot of cool stuff. I try to keep my GitHub Stars Profile up-to-date with my latests content.

When you're done here, follow me on Twitter! @JLLeitschuh

Current sponsors 1

@nuvs
Past sponsors 3
@santoshyadavdev
@nat
@indeedeng

Featured work

  1. JLLeitschuh/security-research

    Public disclosure channel for security vulnerabilities

    Python 16
  2. WPIRoboticsProjects/GRIP

    Program for rapidly developing computer vision applications

    Java 380
  3. JLLeitschuh/ktlint-gradle

    A ktlint gradle plugin

    Kotlin 1,490
  4. gradle/gradle

    Adaptable, fast automation for all

    Groovy 17,077
  5. wpilibsuite/allwpilib

    Official Repository of WPILibJ and WPILibC

    C++ 1,092
  6. JLLeitschuh/kotlin-guiced

    Convenience Kotlin API over the Google Guice DI Library

    Kotlin 18

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$7 a month

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So you want the "Sponsoring" badge, eh? I see how it is.

$17 a month

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Buy my partner (and me!) a Burrito 🌯 Security research can't happen without brain food. Mil gracias!

$70 a month

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Thank you very much for your support!

$500 a month

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Add one project to my list of "high priority" projects that I will look at as a first pass for any ongoing security research. I'll prioritize running my early-beta CodeQL queries against your project and report findings to your project as a priority.

$1,500 a month

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Add an entire GitHub Organization to my list of "high priority" projects that I will look at as a first pass for any ongoing security research. I'll prioritize running my early-beta CodeQL queries as well as perform manual spot-checks against your organization and report findings to your project as a priority.

$2,500 a month

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Add multiple GitHub Organizations to my list of "high priority" projects that I will look at as a first pass for any ongoing security research. I'll prioritize running my early-beta CodeQL queries as well as perform manual spot-checks against your organization and report findings to your project as a priority.

$5,000 a month

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Let's talk! 😄