CVE-2025-53367: An exploitable out-of-bounds write in DjVuLibre
DjVuLibre has a vulnerability that could enable an attacker to gain code execution on a Linux Desktop system when the user tries to open a crafted document.
Vulnerability research
Dedicated to advancing the understanding and detection of software vulnerabilities—and explaining the latest vulnerability research from the GitHub Security Lab. Go behind the scenes with the GitHub Security Lab, a collaborative initiative that brings together security researchers, developers, and organizations to find and fix security vulnerabilities in open source software.
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Bypassing MTE with CVE-2025-0072
In this post, I’ll look at CVE-2025-0072, a vulnerability in the Arm Mali GPU, and show how it can be exploited to gain kernel code execution even when Memory Tagging Extension (MTE) is enabled.
Cutting through the noise: How to prioritize Dependabot alerts
Learn how to effectively prioritize alerts using severity (CVSS), exploitation likelihood (EPSS), and repository properties, so you can focus on the most critical vulnerabilities first.
How to request a change to a CVE record
Learn how to identify which CVE Numbering Authority is responsible for the record, how to contact them, and what to include with your suggestion.
Latest
A maintainer’s guide to vulnerability disclosure: GitHub tools to make it simple
A step-by-step guide for open source maintainers on how to handle vulnerability reports confidently from the start.
Sign in as anyone: Bypassing SAML SSO authentication with parser differentials
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.
Cybersecurity researchers: Digital detectives in a connected world
Discover the exciting world of cybersecurity research: what researchers do, essential skills, and actionable steps to begin your journey toward protecting the digital world.
Attacks on Maven proxy repositories
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.
Announcing CodeQL Community Packs
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…
Uncovering GStreamer secrets
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.
CodeQL zero to hero part 4: Gradio framework case study
Learn how I discovered 11 new vulnerabilities by writing CodeQL models for Gradio framework and how you can do it, too.
Attacking browser extensions
Learn about browser extension security and secure your extensions with the help of CodeQL.
Cybersecurity spotlight on bug bounty researcher @adrianoapj
As we wrap up Cybersecurity Awareness Month, the GitHub Bug Bounty team is excited to feature another spotlight on a talented security researcher who participates in the GitHub Security Bug Bounty Program—@adrianoapj!
Cybersecurity spotlight on bug bounty researcher @imrerad
For this year’s Cybersecurity Awareness Month, the GitHub Bug Bounty team is excited to feature another spotlight on a talented security researcher who participates in the GitHub Security Bug Bounty Program—@imrerad!
Kicking off Cybersecurity Awareness Month: Researcher spotlights and additional incentives!
For this year’s Cybersecurity Awareness Month, GitHub’s Bug Bounty team is excited to offer some additional incentives to security researchers!
From object transition to RCE in the Chrome renderer
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.
3 ways to get Remote Code Execution in Kafka UI
In this blog post, we’ll explain how we discovered three critical vulnerabilities in Kafka UI and how they can be exploited.
Attack of the clones: Getting RCE in Chrome’s renderer with duplicate object properties
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.
Execute commands by sending JSON? Learn how unsafe deserialization vulnerabilities work in Ruby projects
Can an attacker execute arbitrary commands on a remote server just by sending JSON? Yes, if the running code contains unsafe deserialization vulnerabilities. But how is that possible? In this blog post, we’ll describe how unsafe deserialization vulnerabilities work and how you can detect them in Ruby projects.
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