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Malicious package

unisys-corenpm

Malicious code in unisys-core (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-2877
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall unisys-core

What this malware does

The package unisys-core was found to contain malicious code.

The OpenSSF Package Analysis project identified 'unisys-core' @ 99.99.2 (npm) as malicious.

It is considered malicious because:

  • The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged
99.99.2

Indicators of compromise (SHA-256)

e53171bb204b169694a2091e05afa93c74c650dee8885bb766201fb4cc3b6709
c759e3a9b4c256239f0ec3be5b97424efc8191d317d82feb632b84e77d6c46eb

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 unisys-core (version 99.99.2). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging unisys-core across your stack and pipelines.

  2. If you installed it — respond

    Remove unisys-core 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 unisys-core 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 unisys-core 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. unisys-core on npm has been identified as a malicious package (version 99.99.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks unisys-core-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.

unisys-core (npm) malicious package — MAL-2026-2877 | O3 Security