chart-data-utilsnpm
Advisory published Updated
chart-data-utils is a confirmed malicious npm package (MAL-2026-12350) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in chart-data-utils (npm)
What this malware does
[email protected] advertises itself as a chart data/color helper library (index.js contains only trivial color utilities), but ships a postinstall.js that runs at npm install time and performs credential harvesting and host reconnaissance. The postinstall shells out via child_process.exec to: (1) collect hostname, whoami/id output, Docker/cgroup indicators, sudo -ln, ps aux, ip addr/route; (2) enumerate process environment variables and grep-filter for KEY|TOKEN|SECRET|CREDENTIAL|NPM_TOKEN|AWS_|AZURE|GCP|GITHUB_TOKEN plus GitHub Actions identity fields (GITHUB_TOKEN, GITHUB_REPOSITORY, GITHUB_ACTOR, RUN_ID); (3) probe cloud instance-metadata endpoints at 169.254.169.254 (AWS), 100.100.100.200 (Aliyun), metadata.google.internal (GCP), metadata.tencentyun.com (Tencent), and an internal host tst.woa.com; (4) base64-encode the collected data and POST/GET it over plain HTTP to the hardcoded Burp Collaborator subdomain pzs5w7ntzhsnepwk564lyfdci3oucl0a.oastify.com. The package name/description are a cover story for a CI credential harvester; Chinese-language comments ("分片回传版") in the postinstall reference tst.woa.com.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for chart-data-utils (version 1.0.0).
If you installed it — respond
chart-data-utils 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 chart-data-utils 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
Campaign
References
Credits
- Amazon Inspector · finder
- ReversingLabs · finder
Detect & block this
O3 blocks chart-data-utils-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.