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Malicious package

mdp-client-webnpm

Malicious code in mdp-client-web (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-744
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall mdp-client-web

What this malware does

The package mdp-client-web was found to contain malicious code.

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

2 flagged
0.0.1-security99.99.1

Indicators of compromise (SHA-256)

070c26f2080c516dd8c197674dcc76a911d4dfb62242027e1d50a04c4536f0b2
3bae22cc58ac4c2a2b449514ef62c82fde3dd2d6d0d5697b3689f16c8583e62b
7c84f8077092659cbd7908cb8b7c5f3b25be88eb1d4edb3b0cc353dfbc1da778

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for mdp-client-web (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging mdp-client-web across your stack and pipelines.

  2. If you installed it — respond

    Remove mdp-client-web from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If mdp-client-web 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 mdp-client-web 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. mdp-client-web on npm has been identified as a malicious package (versions 0.0.1-security, 99.99.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-crrc-9hrh-2pghRLMA-2026-01427

References

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks mdp-client-web-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

mdp-client-web (npm) malicious package — MAL-2026-744 | O3 Security