google/oss-fuzz
Sep 2025 – Dec 2025
2 Months active
Languages Used
JavaShellDockerfile
Technical Skills
Build ScriptingBuild SystemsCSS SelectorsConfiguration ManagementDockerFuzzing
Jonathan Hedley
PROFILE
Jonathan Hedley
Jonathan contributed to google/oss-fuzz by developing an HTML and CSS fuzz testing infrastructure to strengthen Jsoup against malformed inputs. He implemented fuzzers for HTML fragments and CSS selectors, introducing a shared input dictionary across multiple formats such as HTML, SVG, and XML to improve coverage and reduce redundancy. Jonathan updated build scripts and Docker configurations to integrate re2j, enhancing regex safety during fuzzing. In a separate effort, he modernized the Java build pipeline by upgrading Maven and enabling Java 17 compatibility, which improved build stability and maintainability. His work demonstrated depth in Java, Docker, and build system engineering.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
3Total
Bugs
0
Commits
3
Features
2
Lines of code
116
Activity Months2
Your Network
212 peopleWork History
December 2025
1 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — Focused on modernizing the Java build pipeline for google/oss-fuzz to enable Java 17 compatibility and smoother downstream integrations. Implemented an upgrade of Maven to 3.9.11 and adjusted build scripts, enabling newer features and dependencies. This work removed build blockers for upstream contributions (e.g., enabling jsoup PR 2447) and lays groundwork for future Java SDK support. No customer-facing features delivered this month; the primary value is long-term stability, maintainability, and broader compatibility that improve engineering velocity and risk reduction.
1 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — Focused on modernizing the Java build pipeline for google/oss-fuzz to enable Java 17 compatibility and smoother downstream integrations. Implemented an upgrade of Maven to 3.9.11 and adjusted build scripts, enabling newer features and dependencies. This work removed build blockers for upstream contributions (e.g., enabling jsoup PR 2447) and lays groundwork for future Java SDK support. No customer-facing features delivered this month; the primary value is long-term stability, maintainability, and broader compatibility that improve engineering velocity and risk reduction.
December 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for google/oss-fuzz. Delivered an HTML/CSS Fuzz Testing Infrastructure to harden Jsoup against malformed inputs, including fuzzers for HTML fragments and CSS selectors, a shared dictionary across HTML, SVG, MathML, CSS, XML, XPath, and HTTP, and build/Docker updates to include re2j for safe regex usage in fuzzing.
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for google/oss-fuzz. Delivered an HTML/CSS Fuzz Testing Infrastructure to harden Jsoup against malformed inputs, including fuzzers for HTML fragments and CSS selectors, a shared dictionary across HTML, SVG, MathML, CSS, XML, XPath, and HTTP, and build/Docker updates to include re2j for safe regex usage in fuzzing.
Activity
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Quality Metrics
Correctness93.4%
Maintainability86.6%
Architecture86.6%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
DockerfileJavaShell
Technical Skills
Build ScriptingBuild SystemsCSS SelectorsConfiguration ManagementContainerizationDevOpsDockerFuzzingJavaJava DevelopmentMaven
Repositories Contributed To
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