MAL-2026-4534 Malicious code in color-style-utils (npm)
Malicious package
Published
MAL-2026-4534 is a malicious package: color-style-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-2026-4534/ (Markdown: https://insights.sbomify.com/MAL-2026-4534/index.md)
- Package
- color-style-utils
- Registry
- npm
What is MAL-2026-4534?
MAL-2026-4534 is a malicious package in color-style-utils, published on 20 May 2026.
Official description
On
npm install, all three lifecycle hooks (preinstall, install, postinstall) execute postinstall.js, which harvests installer secrets and exfiltrates them to an attacker-controlled localhost.run SSH tunnel at edcf8b03c84634.lhr.life. The script reads ~/.ssh/*, ~/.aws/credentials and config, ~/.config/gcloud, ~/.azure, ~/.npmrc, ~/.kube/config, ~/.docker/config.json, browser profile directories, crypto wallets, VPN configs, shell histories, and dotfiles; dumps process.env; and regex-matches GitHub, AWS, Google, Stripe, Slack, and Discord tokens. It also fingerprints the host via api.ipify.org and ipapi.co (public IP, country, city, ISP, lat/lon, hostname, username, uid/gid, local IPs) and POSTs the full bundle to https://edcf8b03c84634.lhr.life/collect via https.request. The package additionally declares a self-referential dependency on itself (color-style-utils: ^1.0.4) and ships an undeclared ~35 KB sibling file postinstall2.jsµ with a non-ASCII suffix that is not referenced by any documented script — both consistent with name-squat/decoy smuggling patterns.What should I do about MAL-2026-4534?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.
Sources
Also known as GHSA-2hm6-8j47-2qg7.