Security

We’re excited to highlight another top contributing researcher to GitHub’s Bug Bounty Program—@Ammar Askar!

In this post, I’ll exploit CVE-2023-4069, 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.

CVE-2023-43641 is a vulnerability in libcue, which can lead to code execution by downloading a file on GNOME.

How to get the security basics right at your organization.

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—@inspector-ambitious!

In this post, I’ll exploit CVE-2023-3420, 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.

The GitHub Security Lab audits open source projects for security vulnerabilities and helps maintainers fix them. Recently, we passed the milestone of 500 CVEs disclosed. Let’s take a trip down memory lane with a review of some noteworthy CVEs!

Learn how GitHub’s CodeQL leveraged AI modeling and multi-repository variant analysis to discover a new CVE in Gradle.

In this post, we’ll deep dive into some interesting attacks on mTLS authentication. We’ll have a look at implementation vulnerabilities and how developers can make their mTLS systems vulnerable to user impersonation, privilege escalation, and information leakages.

Some best practices and important defenses to prevent common attacks against GitHub Actions that are enabled by stolen personal access tokens, compromised accounts, or compromised GitHub sessions.

It was another record year for our Security Bug Bounty program! We’re excited to highlight some achievements we’ve made together with the bounty community in 2022!

Researchers from Purdue and NCSU have found a large number of command injection vulnerabilities in the workflows of projects on GitHub. Follow these four tips to keep your GitHub Actions workflows secure.

This blog post describes two security vulnerabilities in Decidim, a digital platform for citizen participation. Both vulnerabilities were addressed by the Decidim team with corresponding update releases for the supported versions in May 2023.

GitHub has identified a low-volume social engineering campaign that targets the personal accounts of employees of technology firms. No GitHub or npm systems were compromised in this campaign. We’re publishing this blog post as a warning for our customers to prevent exploitation by this threat actor.

Introducing a new tool to monitor and control the permissions of the repository token for GitHub Actions.