Github Security | Breaking Cybersecurity News | The Hacker News

A public issue can trick GitHub Agentic Workflows into leaking the contents of an organization's private repositories, researchers at Noma Security have shown. The attacker needs only to open a normal-looking issue on a public repository, with no stolen credentials and no access to the organization. If that organization has given the agent read access across its repositories, private ones included, the issue can steer it into pulling private contents into a public comment. Noma calls the technique GitLost . The target is GitHub Agentic Workflows , a feature now in public preview that GitHub launched in February. Instead of writing automation scripts, you write instructions to an AI agent in plain English in a Markdown file. The agent reads issues and pull requests, runs tools, and replies on its own. It can be powered by GitHub Copilot, Anthropic's Claude, Google Gemini, or OpenAI Codex. Workflows are read-only by default, but an organization can hand one a token with...

Multiple security vendors are sounding the alarm about a second wave of attacks targeting the npm registry in a manner that's reminiscent of the Shai-Hulud attack . The new supply chain campaign, dubbed Sha1-Hulud , has compromised hundreds of npm packages, according to reports from Aikido , HelixGuard , JFrog , Koi Security , ReversingLabs , SafeDep , Socket , Step Security , and Wiz . The trojanized npm packages were uploaded to npm between November 21 and 23, 2025. The attack has impacted popular packages from Zapier, ENS Domains, PostHog, and Postman, among others. "The campaign introduces a new variant that executes malicious code during the preinstall phase, significantly increasing potential exposure in build and runtime environments," Wiz researchers Hila Ramati, Merav Bar, Gal Benmocha, and Gili Tikochinski said. Like the Shai-Hulud attack that came to light in September 2025, the latest activity also publishes stolen secrets to GitHub, this time with the rep...

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...

Developers around the world depend on open source components to build their software products. According to industry estimates, open source components account for 60-80% of the code base in modern applications. Collaboration on open source projects throughout the community produces stronger code, squashing the bugs and catching the vulnerabilities that impact the security of organizations who look to open source components as the key to their application building success. Thanks in part to the "thousand eyeballs" of the community, the number of reported vulnerabilities in open source projects is on the rise, spiking 51% in 2017 from the previous year. This is even more concerning since, as shown in the same study, most vulnerabilities are found in popular projects. Data shows that 32% of the top 100 open source projects have at least one vulnerability, meaning that developers have their work cut out for them, no matter which components they are using in their products....