OpenSSF/OSV advisory MAL-2026-4534 confirms this npm version as malicious. 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...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in color-style-utils (npm)
Details
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.
Decision reason
OpenSSF Malicious Packages via OSV confirms color-style-utils@1.0.9 as malicious (MAL-2026-4534): Malicious code in color-style-utils (npm)