epic-webpack-confignpm
Advisory published Updated
epic-webpack-config is a confirmed malicious npm package (MAL-2025-49219) that executes malicious code on install (malicious versions 0.0.0, 0.0.1-security, 0.1.0…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in epic-webpack-config (npm)
What this malware does
The package epic-webpack-config was found to contain malicious code.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for epic-webpack-config (104 malicious versions).
If you installed it — respond
Remove epic-webpack-config from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If epic-webpack-config was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks epic-webpack-config-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.