Malicious code in @antv/g-plugin-webgpu-device (npm)
The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/g-plugin-webgpu-device, as part of the "Mini Shai-Hulud" supply chain attack campaign. Each malicious version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials via the GitHub API and establishes persistence through CI/CD workflow injection and system daemons.
- Disclosed
- Last updated
- Blast radius
- 631 malicious versions across 314 npm packages; widespread credential theft affecting AWS, GitHub, npm, GCP, Azure, Kubernetes, SSH, Docker, databases, Stripe, and Slack
- Ecosystems
- Attack vectors
- Threat actor
- Affected entities
- @antv/g-plugin-webgpu-deviceModified with malicious preinstall hook executing obfuscated Bun payload
A threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst, part of the "Mini Shai-Hulud" supply chain attack campaign. The @antv/g-plugin-webgpu-device package was among those compromised.
Each malicious version injects a preinstall hook that executes a 498KB obfuscated Bun script. The script uses the GitHub API as a covert exfiltration channel and commits stolen credentials to attacker-controlled repositories following Dune-themed naming patterns (e.g., harkonnen-melange-742).
Stolen data includes AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes service account tokens, SSH keys, Docker auth configs, database connection strings, Stripe keys, and Slack tokens. The attack also establishes persistence via CI/CD workflow injection (a GitHub Actions workflow named Run Copilot that dumps all secrets via toJSON(secrets)), AI agent session hooks, and a system daemon named kitty-monitor.
The compromise was identified by Amazon Inspector and Google Open Source Security sources.
Indicators of compromise
- Packages
- @antv/g-plugin-webgpu-device
Remediation
- Immediately revoke all credentials (AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes tokens, SSH keys, Docker auth configs, database credentials, Stripe keys, Slack tokens) that may have been exposed
- Remove or downgrade @antv/g-plugin-webgpu-device to a known-clean version prior to the attack
- Audit npm account `atool` and reset its credentials; enable MFA on all npm accounts
- Scan CI/CD systems for the `Run Copilot` GitHub Actions workflow and remove any injected workflows
- Search for and remove the `kitty-monitor` system daemon from affected systems
- Review git commit history for suspicious commits to attacker-controlled repositories with Dune-themed names
- Monitor for unauthorized access using stolen credentials and rotate all exposed secrets
- Update npm packages to patched versions once available from maintainers
Sources
- GitHub Advisory GHSA-9p48-5jr5-2j4g · GitHub Advisory Database
Cite this entry
"Malicious code in @antv/g-plugin-webgpu-device (npm)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 26, 2026; last updated July 26, 2026. https://supplychainattack.org/incident/malicious-code-in-antv-g-plugin-webgpu-device-npm-1wjzyq
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