colorpicker-uinpm
colorpicker-ui is a confirmed malicious npm package (MAL-2026-6473) that steals credentials and exfiltrates sensitive data (malicious versions 1.2.4, 1.2.5). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in colorpicker-ui (npm)
What this malware does
Package presents itself as a minimal React color-picker but ships a postinstall hook ("postinstall": "node setup.js") that performs targeted credential theft and code-injection staging on npm install. setup.js reads classic installer secrets — /var/run/secrets/kubernetes.io/serviceaccount/token (Kubernetes service-account token granting cluster API access), the AWS Instance Metadata Service at http://169.254.169.254/latest/meta-data/ (cloud instance credentials), /etc/passwd, /etc/resolv.conf, /etc/hosts, the full process.env, and runs id / uname -a plus a recursive listing of /app. The harvested data is wrapped as export default "..."; and written to multiple attacker-chosen paths including /app/sandbox-data/workspace/frontend/_rce.ts, ../frontend/_rce.ts, and /tmp/rce.json. The _rce.ts filename and the targeting of adjacent frontend workspace directories are designed to land the file inside AI coding-agent / sandbox workspaces that auto-import files from the workspace tree, converting the postinstall into arbitrary code execution in the next agent run while also exfiltrating the secrets to whatever process consumes the file. The advertised color-picker API in index.js (ColorPicker, hexToHsl, hslToHex) is functional but exists solely as cover; a color-picker library has no need to read kubernetes tokens, IMDS, or /etc/passwd at install. The log message 'generating default theme cache' printed by setup.js is deliberately misleading.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for colorpicker-ui (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging colorpicker-ui across your stack and pipelines.
If you installed it — respond
colorpicker-ui is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If colorpicker-ui was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks colorpicker-ui before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks colorpicker-ui-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.