Malware in webpack-cdn-fetcher
Malware discovered in the npm package webpack-cdn-fetcher. The package grants full system compromise to attackers, requiring immediate removal and credential rotation from a clean system.
- Disclosed
- Last updated
- Blast radius
- Any system with webpack-cdn-fetcher installed or running
- Ecosystems
- Attack vectors
- Affected entities
- webpack-cdn-fetcher
A malicious package named webpack-cdn-fetcher was published to npm and contains malware that compromises any system on which it is installed or executed.\n\nAccording to the GitHub Advisory (GHSA-gjvp-mjhq-rfwc), any computer running this package should be considered fully compromised. The malware provides outside entities with full control of the affected system.\n\nImmediate remediation requires rotating all secrets and keys from a different, uncompromised computer, and removing the package. However, due to the level of system compromise, removal of the package alone may not eliminate all malicious software installed as a result of the initial compromise.\n\nThe advisory was published on 2026-08-19.
Indicators of compromise
- Packages
- webpack-cdn-fetcher
Remediation
- Immediately remove webpack-cdn-fetcher from all systems
- Rotate all secrets, API keys, and credentials from a clean, uncompromised computer
- Perform a full security audit and malware scan of any system that had the package installed
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging if the package was installed on production or sensitive systems
Sources
- GitHub Advisory GHSA-gjvp-mjhq-rfwc · GitHub Advisory Database
Cite this entry
"Malware in webpack-cdn-fetcher." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 19, 2026; last updated August 19, 2026. https://supplychainattack.org/incident/malware-in-webpack-cdn-fetcher-k0tdwe
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