MAL-2026-12110 Malicious code in ethereum-sign-utils (npm)
Malicious package
Published
MAL-2026-12110 is a malicious package: ethereum-sign-utils (npm). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-12110/ (Markdown: https://insights.sbomify.com/MAL-2026-12110/index.md)
- Package
- ethereum-sign-utils
- Registry
- npm
What is MAL-2026-12110?
MAL-2026-12110 is a malicious package in ethereum-sign-utils, published on 5 Aug 2026.
Official description
On npm install, the package's postinstall script (node postinstall.js, declared in package.json scripts.postinstall) reads installer-side secret files including.env variants, ~/.npmrc, ~/.aws/credentials, ~/.aws/config, ~/.ssh/id_rsa/id_ed25519/id_ecdsa, Solana and Ethereum keystores, and ~/.gitconfig. It also enumerates hidden directories under $HOME and reads any file under 50KB whose name matches wallet|key|secret|seed|mnemonic|keystore|private or has.json/.pem/.key extensions. Collected contents are POSTed as JSON to the hardcoded endpoint https://enxhcjpo5ev.x.pipedream.net/c. The package's main index.js is empty, so the package provides no legitimate functionality — its sole effect on install is credential and wallet-key exfiltration. The package name mimics utilities in the Ethereum tooling ecosystem as a lure.
What should I do about MAL-2026-12110?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.