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Malicious package

cb-wallet-datanpm

cb-wallet-data is a confirmed malicious npm package (MAL-2026-4506) that steals credentials and exfiltrates sensitive data (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in cb-wallet-data (npm)

MAL-2026-4506
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall cb-wallet-data

What this malware does

Package name 'cb-wallet-data' targets a presumed Coinbase-internal namespace and is published by an unaffiliated party. Both postinstall.js (npm install lifecycle hook) and index.js (main, runs on require) issue an unconditional HTTPS GET to https://icy-cell-fb53.gh0stfqce25.workers.dev/poc carrying the package name and installer Node.js runtime version as query parameters. Any developer or build system whose package manager misroutes the internal name 'cb-wallet-data' to the public npm registry will silently transmit the existence of that internal name plus their Node version to a third-party Cloudflare Workers endpoint without consent. While the payload is narrow (no credential or environment scraping), the channel is a confirmed install-time and import-time beacon to attacker/researcher-controlled infrastructure, exposing internal namespace and toolchain metadata that itself is sensitive supply-chain reconnaissance data.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

9d076ee3d487c7c10f785494c4391e39eb327b696224d5653746144fa5ac8d37
b40e10a9e9de90e7efbd777b5a024d2cd88e7e4be863f638d82dcac760d8ea55

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 cb-wallet-data (version 0.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging cb-wallet-data across your stack and pipelines.

  2. If you installed it — respond

    cb-wallet-data 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 cb-wallet-data 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 cb-wallet-data 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. cb-wallet-data on npm has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-003425GHSA-7w56-x3g2-57fg

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks cb-wallet-data-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

cb-wallet-data (npm) malicious package — MAL-2026-4506 | O3 Security