GitHub Security Lab

Learn how to identify which CVE Numbering Authority is responsible for the record, how to contact them, and what to include with your suggestion.

What is CORS and how can a CORS misconfiguration lead to security issues? In this blog post, we’ll describe some common CORS issues as well as how you can find and fix them.

A step-by-step guide for open source maintainers on how to handle vulnerability reports confidently from the start.

Critical authentication bypass vulnerabilities (CVE-2025-25291 + CVE-2025-25292) were discovered in ruby-saml up to version 1.17.0. In this blog post, we’ll shed light on how these vulnerabilities that rely on a parser differential were uncovered.

Discover the exciting world of cybersecurity research: what researchers do, essential skills, and actionable steps to begin your journey toward protecting the digital world.

Learn how specially crafted artifacts can be used to attack Maven repository managers. This post describes PoC exploits that can lead to pre-auth remote code execution and poisoning of the local artifacts in Sonatype Nexus and JFrog Artifactory.

In the last few months, we secured 75+ GitHub Actions workflows in open source projects, disclosing 90+ different vulnerabilities. Out of this research we produced new support for workflows in CodeQL, empowering you to secure yours.

We are excited to introduce the new CodeQL Community Packs, a comprehensive set of queries and models designed to enhance your code analysis capabilities. These packs are tailored to augment…

In this post, I’ll walk you through the vulnerabilities I uncovered in the GStreamer library and how I built a custom fuzzing generator to target MP4 files.

Learn how I discovered 11 new vulnerabilities by writing CodeQL models for Gradio framework and how you can do it, too.

Learn about browser extension security and secure your extensions with the help of CodeQL.

Vulnerability data has grown in volume and complexity over the past decade, but open source and programs like the Github Security Lab have helped supply chain security keep pace.

In this post, I’ll exploit CVE-2024-5830, a type confusion in Chrome that allows remote code execution (RCE) in the renderer sandbox of Chrome by a single visit to a malicious site.

In this blog post, we’ll explain how we discovered three critical vulnerabilities in Kafka UI and how they can be exploited.

In this post, I’ll exploit CVE-2024-3833, an object corruption bug in v8, the Javascript engine of Chrome, that allows remote code execution (RCE) in the renderer sandbox of Chrome by a single visit to a malicious site.