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Compromised versions run a malicious payload at npm install time through a binding.gyp node-gyp hook, harvesting credentials from sources like GitHub Actions secrets, cloud provider keys, and package registry tokens, while trying to persist in AI coding assistant configs. Static analysis of version 2.1.2 against the clean 2.1.1 release revealed a new 5 MB index.js and an added binding.gyp, both absent from earlier releases.

StepSecurity now supports Maven in GitHub Checks and OSS Package Search, blocking compromised and freshly published Java dependencies in your pull requests.

On June 24, 2026, an attacker published malicious versions of 20 npm packages belonging to the Leo Platform ecosystem in a coordinated burst spanning less than three seconds. All 20 packages carry an identical CI/CD attack toolkit that steals secrets from GitHub Actions runners, cloud credential stores, package registries, and password managers, then exfiltrates them via the victim's own GitHub token. Together these packages receive approximately 13,600 downloads per week.

On June 24, 2026, an attacker compromised the simonecorsi/mawesome GitHub repository. They force-pushed malicious commits and repointed several version tags to that commit. As a result, any workflow running against those tags after that time executed the attacker's code inside its GitHub Actions runner.

On June 24, 2026, an attacker compromised the codfish/semantic-release-action GitHub repository. At 15:39:06 UTC they force-pushed a malicious commit and repointed several version tags to that commit. As a result, any workflow running against those tags after that time executed the attacker's code inside its GitHub Actions runner.

A coordinated 8-month supply chain attack planted credential-stealing code inside fake AI coding assistants on the JetBrains Marketplace, quietly exfiltrating OpenAI, DeepSeek, and SiliconFlow API keys to an attacker-controlled server in Beijing -- which our investigation found still operational today.

On June 17, 2026, an attacker compromised the @mastra npm organization and quietly added easy-day-js as a dependency across 140+ packages in the Mastra AI framework ecosystem. easy-day-js is a typosquat of the popular dayjs date library, and its latest version contained an obfuscated postinstall dropper that downloaded and ran a second-stage payload from attacker-controlled servers, then deleted itself to remove any trace. Packages with a combined weekly download count exceeding 1.1 million were exposed. If you installed any @mastra package today, treat your environment as compromised.

npm and Python supply chain attacks run on developer machines and steal secrets. See how Package Configs audits registry, cooldown, and auth across your fleet