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Developers running the open source Git code-repository software and tools, like GitHub, on Mac OS X and Windows computers are highly being recommended to install a security update that patches a major security vulnerability in Git clients that leverages an attacker to hijack end-user computers. The critical Git vulnerability affects all versions of the official Git client and all the related software that interacts with Git repositories, including GitHub for Windows and Mac OS X, according to a GitHub advisory published Thursday. HOW GIT BUG WORKS The vulnerability allows an attacker to execute remote code on a client’s computer when the client software accesses Git repositories. The GitHub engineering team gave a detailed explanation on how attackers might exploit the vulnerability: "An attacker can craft a malicious Git tree that will cause Git to overwrite its own .git/config file when cloning or checking out a repository, leading to arbitrary command execution...

Cybersecurity researchers have discovered a malicious npm package named "@acitons/artifact" that typosquats the legitimate " @actions/artifact " package with the intent to target GitHub-owned repositories. "We think the intent was to have this script execute during a build of a GitHub-owned repository, exfiltrate the tokens available to the build environment, and then use those tokens to publish new malicious artifacts as GitHub," Veracode said in an analysis. The cybersecurity company said it observed six versions of the package – from 4.0.12 to 4.0.17 – that incorporated a post-install hook to download and run malware. That said, the latest version available for download from npm is 4.0.10, indicating that the threat actor behind the package, blakesdev , has removed all the offending versions. The package was first uploaded on October 29, 2025, and has since accrued 31,398 weekly downloads. In total, it has been downloaded 47,405 times , according...

Here's the biggest news of the week—Microsoft has reportedly acquired GitHub for $7.5 billion. For those unaware, GitHub is a popular code repository hosting service that allows developers to host their projects, documentation, and code in the cloud using the popular Git source management system, invented in 2005 by Linux founder Linus Torvalds. GitHub is used by many developers and big tech companies including Apple, Amazon, Google, Facebook, and IBM to store their corporate code and privately collaborate on software, but Microsoft is one of the top contributors to the web-hosting service. Microsoft has uploaded several of its most important projects, including PowerShell , the .NET framework, and the Microsoft Edge JavaScript engine , to the website under open source licenses. Microsoft also partnered with Canonical to bring Ubuntu to Windows 10 . Citing sources familiar with the matter, Bloomberg reports that GitHub opted to sell to Microsoft in part because it was impr...

The supply chain attack involving the GitHub Action "tj-actions/changed-files" started as a highly-targeted attack against one of Coinbase's open-source projects, before evolving into something more widespread in scope. "The payload was focused on exploiting the public CI/CD flow of one of their open source projects – agentkit, probably with the purpose of leveraging it for further compromises," Palo Alto Networks Unit 42 said in a report. "However, the attacker was not able to use Coinbase secrets or publish packages." The incident came to light on March 14, 2025, when it was found that "tj-actions/changed-files" was compromised to inject code that leaked sensitive secrets from repositories that ran the workflow. It has been assigned the CVE identifier CVE-2025-30066 (CVSS score: 8.6). According to Endor Labs, 218 GitHub repositories are estimated to have exposed their secrets due to the supply chain attack, and a majority of the leak...

Cybersecurity researchers have uncovered a new campaign in which the threat actors have published more than 67 GitHub repositories that claim to offer Python-based hacking tools, but deliver trojanized payloads instead. The activity, codenamed Banana Squad by ReversingLabs, is assessed to be a continuation of a rogue Python campaign that was identified in 2023 as targeting the Python Package Index (PyPI) repository with bogus packages that were downloaded over 75,000 times and came with information-stealing capabilities on Windows systems. The findings build on a previous report from the SANS's Internet Storm Center in November 2024 that detailed a supposed "steam-account-checker" tool hosted on GitHub, which incorporated stealthy features to download additional Python payloads that can inject malicious code into the Exodus cryptocurrency wallet app and harvest sensitive data to an external server ("dieserbenni[.]ru"). Further analysis of the repository a...

Cybersecurity researchers have discovered a set of 11 malicious Go packages that are designed to download additional payloads from remote servers and execute them on both Windows and Linux systems. "At runtime the code silently spawns a shell, pulls a second-stage payload from an interchangeable set of .icu and .tech command-and-control (C2) endpoints, and executes it in memory," Socket security researcher Olivia Brown said . The list of identified packages is below - github.com/stripedconsu/linker github.com/agitatedleopa/stm github.com/expertsandba/opt github.com/wetteepee/hcloud-ip-floater github.com/weightycine/replika github.com/ordinarymea/tnsr_ids github.com/ordinarymea/TNSR_IDS github.com/cavernouskina/mcp-go github.com/lastnymph/gouid github.com/sinfulsky/gouid github.com/briefinitia/gouid

Multiple security vulnerabilities have been disclosed in GitHub Desktop as well as other Git-related projects that, if successfully exploited, could permit an attacker to gain unauthorized access to a user's Git credentials. "Git implements a protocol called Git Credential Protocol to retrieve credentials from the credential helper ," GMO Flatt Security researcher Ry0taK, who discovered the flaws, said in an analysis published Sunday. "Because of improper handling of messages, many projects were vulnerable to credential leakage in various ways." The list of identified vulnerabilities, dubbed Clone2Leak, is as follows - CVE-2025-23040 (CVSS score: 6.6) - Maliciously crafted remote URLs could lead to credential leaks in GitHub Desktop  CVE-2024-50338 (CVSS score: 7.4) - Carriage-return character in remote URL allows the malicious repository to leak credentials in Git Credential Manager CVE-2024-53263 (CVSS score: 8.5) - Git LFS permits retrieval of cre...

A critical misconfiguration in Amazon Web Services (AWS) CodeBuild could have allowed complete takeover of the cloud service provider's own GitHub repositories, including its AWS JavaScript SDK, putting every AWS environment at risk. The vulnerability has been codenamed CodeBreach by cloud security company Wiz. The issue was fixed by AWS in September 2025 following responsible disclosure on August 25, 2025. "By exploiting CodeBreach, attackers could have injected malicious code to launch a platform-wide compromise, potentially affecting not just the countless applications depending on the SDK, but the Console itself, threatening every AWS account," researchers Yuval Avrahami and Nir Ohfeld said in a report shared with The Hacker News. The flaw, Wiz noted, is the result of a weakness in the continuous integration (CI) pipelines that could have enabled unauthenticated attackers to breach the build environment, leak privileged credentials like GitHub admin tokens, and...

A threat actor known as Stargazer Goblin has set up a network of inauthentic GitHub accounts to fuel a Distribution-as-a-Service (DaaS) that propagates a variety of information-stealing malware and netting them $100,000 in illicit profits over the past year. The network, which comprises over 3,000 accounts on the cloud-based code hosting platform, spans thousands of repositories that are used to share malicious links or malware, per Check Point, which has dubbed it "Stargazers Ghost Network." Some of the malware families propagated using this method include Atlantida Stealer, Rhadamanthys, RisePro, Lumma Stealer, and RedLine, with the bogus accounts also engaged in starring, forking, watching, and subscribing to malicious repositories to give them a veneer of legitimacy. The network is believed to have been active since August 2022 in some preliminary form, although an advertisement for the DaaS wasn't spotted in the dark until early July 2023. "Threat actors no...

Threat actors are increasingly making use of GitHub for malicious purposes through novel methods, including abusing secret Gists and issuing malicious commands via git commit messages. "Malware authors occasionally place their samples in services like Dropbox, Google Drive, OneDrive, and Discord to host second stage malware and sidestep detection tools," ReversingLabs researcher Karlo Zanki  said  in a report shared with The Hacker News. "But lately, we have observed the increasing use of the GitHub open-source development platform for hosting malware." Legitimate public services are  known  to be  used  by  threat actors  for hosting malware and acting as  dead drop resolvers  to fetch the actual command-and-control (C2) address. While using public sources for C2 does not make them immune to takedowns, they do offer the benefit of allowing threat actors to easily create attack infrastructure that's both inexpensive and reliable. ...

New research has found that it is possible for threat actors to abuse a legitimate feature in GitHub Codespaces to deliver malware to victim systems. GitHub Codespaces  is a cloud-based configurable development environment that allows users to debug, maintain, and commit changes to a given codebase from a web browser or via an integration in Visual Studio Code. It also comes with a port forwarding feature that makes it possible to access a web application that's running on a particular port within the codespace directly from the browser on a local machine for testing and debugging purposes. "You can also forward a port manually, label forwarded ports, share forwarded ports with members of your organization, share forwarded ports publicly, and add forwarded ports to the codespace configuration," GitHub  explains  in its documentation. It's  important  to note here that any forwarded port that's made public will also permit any party with knowledge of the UR...

Cloud-based code hosting platform GitHub has announced that it will now start sending Dependabot alerts for vulnerable GitHub Actions to help developers fix security issues in CI/CD workflows. "When a security vulnerability is reported in an action, our team of security researchers will create an advisory to document the vulnerability, which will trigger an alert to impacted repositories," GitHub's Brittany O'Shea and Kate Catlin  said . GitHub Actions  is a continuous integration and continuous delivery (CI/CD) solution that enables users to automate the software build, test, and deployment pipeline. Dependabot  is part of the Microsoft-owned subsidiary's continued efforts to secure the  software supply chain  by  notifying  users that their source code depends on a package with a security vulnerability and helping keep all the dependencies up-to-date. The latest move entails receiving alerts on GitHub Actions and vulnerabilities impacting deve...

Maintainers of the Gentoo Linux distribution have now revealed the impact and "root cause" of the attack that saw unknown hackers taking control of its GitHub account last week and modifying the content of its repositories and pages. The hackers not only managed to change the content in compromised repositories but also locked out Gentoo developers from their GitHub organisation. As a result of the incident, the developers were unable to use GitHub for five days. What Went Wrong? Gentoo developers have revealed that the attackers were able to gain administrative privileges for its Github account, after guessing the account password. The organisation could have been saved if it was using a two-factor authentication, which requires an additional passcode besides the password in order to gain access to the account. "The attacker gained access to a password of an organization administrator. Evidence collected suggests a password scheme where disclosure on on...

Microsoft has announced to shut down CodePlex -- its website for hosting repositories of open-source software projects -- on December 15, 2017. Launched in 2006, CodePlex was one of the Microsoft's biggest steps towards the world of open source community -- where any programmer, anywhere can share the code for their software or download and tweak the code to their liking. However, Microsoft says that the service has dramatically fallen in usage and that fewer than 350 projects seeing a source code commit over the last 30 days, pointing to GitHub as the "de-facto place for open source sharing." GitHub – 'Facebook for Programmers' In a blog post published Friday, Microsoft Corporate VP Brian Harry wrote that the shutdown of CodePlex is because the open source community has almost entirely moved over to GitHub, which provides similar functionality for sharing code that people can collaborate on. "Over the years, we have seen a lot of amazing opti...

Continuous integration and continuous delivery (CI/CD) misconfigurations discovered in the open-source  TensorFlow  machine learning framework could have been exploited to orchestrate  supply chain attacks . The misconfigurations could be abused by an attacker to "conduct a supply chain compromise of TensorFlow releases on GitHub and PyPi by compromising TensorFlow's build agents via a malicious pull request," Praetorian researchers Adnan Khan and John Stawinski  said  in a report published this week. Successful exploitation of these issues could permit an external attacker to upload malicious releases to the GitHub repository, gain remote code execution on the self-hosted GitHub runner, and even retrieve a GitHub Personal Access Token (PAT) for the  tensorflow-jenkins user . TensorFlow uses GitHub Actions to automate the software build, test, and deployment pipeline. Runners, which refer to machines that execute jobs in a GitHub Actions workflow, can ...

Trivy, a popular open-source vulnerability scanner maintained by Aqua Security, was compromised a second time within the span of a month to deliver malware capable of stealing sensitive CI/CD secrets. The latest incident impacted GitHub Actions " aquasecurity/trivy-action " and " aquasecurity/setup-trivy ," which are used to scan Docker container images for vulnerabilities and set up GitHub Actions workflow with a specific version of the scanner, respectively. "We identified that an attacker force-pushed 75 out of 76 version tags in the aquasecurity/trivy-action repository, the official GitHub Action for running Trivy vulnerability scans in CI/CD pipelines," Socket security researcher Philipp Burckhardt said . "These tags were modified to serve a malicious payload, effectively turning trusted version references into a distribution mechanism for an infostealer." The payload executes within GitHub Actions runners and aims to extract valuable de...

GitHub has put out an advisory detailing what may be an ongoing phishing campaign targeting its users to steal credentials and two-factor authentication (2FA) codes by impersonating the CircleCI DevOps platform. The Microsoft-owned code hosting service said it learned of the attack on September 16, 2022, adding the campaign impacted "many victim organizations." The fraudulent messages claim to notify users that their CircleCI sessions have expired and that they should log in using GitHub credentials by clicking on a link. Another bogus email  revealed by CircleCI  prompts users to sign in to their GitHub accounts to accept the company's new Terms of Use and Privacy Policy by following the link embedded in the message. Regardless of the lure, doing so redirects the target to a lookalike GitHub login page designed to steal and exfiltrate the entered credentials as well as the Time-based One Time Password (TOTP) codes in real-time to the attacker, effectively allowing ...

GitHub hacked with Ruby on Rails public key vulnerability Github, the service that many professional programmers use to store their work and collaborate on coding, was hacked over the weekend. A young Russian developer Egor Homakov exploited a gaping vulnerability in GitHub that allowed him (or anyone else with basic hacker know-how) to gain administrator access to projects such as Ruby on Rails, Linux, and millions of others. When Github saw what happened, they suspended Homakov’s account, which created a firestorm of protest. A blog post entitled, Github, You Have Let Us All Down . Github has succumbed to a public key vulnerability in Ruby on Rails allowing a user administrator access to the popular Rails Git. Homakov's actions were relatively simple - he merely uploaded his public key to the repository so Git thought he was an approved administrator of that project. This would not only entitle Homakov to commit files but he could effectively wipe the entire project and its ...

An unknown hacker yesterday successfully managed to hack into the official GitHub account of Canonical, the company behind the Ubuntu Linux project and created 11 new empty repositories . It appears that the cyberattack was, fortunately, just a "loud" defacement attempt rather than a "silent" sophisticated supply-chain attack that could have been abused to distribute modified malicious versions of the open-source Canonical software. In a statement, David from Canonical confirmed that attacker(s) used a Canonical owned GitHub account whose credentials were compromised to unauthorizedly access Canonical's Github account. "We can confirm that on 2019-07-06 there was a Canonical owned account on GitHub whose credentials were compromised and used to create repositories and issues among other activities," David said. "Canonical has removed the compromised account from the Canonical organization in GitHub and is still investigating the extent o...