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Malicious package

content-publisher-sdksnpm

content-publisher-sdks is a confirmed malicious npm package (MAL-2026-12356) that steals credentials and exfiltrates sensitive data (malicious version 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in content-publisher-sdks (npm)

MAL-2026-12356
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall content-publisher-sdks

What this malware does

package.json declares a preinstall hook that runs index.js on npm install. The script collects host reconnaissance (os.hostname(), os.userInfo(), homedir, DNS server list, current working directory, package.json contents) and reads /etc/passwd and /etc/hosts from the installer's filesystem, then POSTs the aggregated JSON over HTTPS to the hardcoded Burp Collaborator subdomain ie02j5ztgjeb6i7tp467ydwnjep8dy1n.oastify.com. The package name mimics a legitimate SDK category but its only behavior on install is this exfiltration beacon.

Malicious versions

1 flagged
1.0.1

Indicators of compromise (SHA-256)

c3faac0139a1c2fd25d8b955e9290380bec365a1d3034fb793dfa723cb930463

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for content-publisher-sdks (version 1.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging content-publisher-sdks across your stack and pipelines.

  2. If you installed it — respond

    content-publisher-sdks 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.

  3. Did it already run?

    If content-publisher-sdks 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.

  4. How O3 protects you

    O3 blocks content-publisher-sdks 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

No. content-publisher-sdks on npm has been identified as a malicious package (version 1.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014841

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks content-publisher-sdks-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

content-publisher-sdks (npm) malicious package — MAL-2026-12356 | O3 Security