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Malicious package

@bcs-adapters/core-adapternpm

Malicious code in @bcs-adapters/core-adapter (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-3263
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @bcs-adapters/core-adapter

What this malware does

The package @bcs-adapters/core-adapter 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

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

719f7fcdb7ed33b2231e8d50732a000d3bd5c3cc44ba677bcc55d641d1aa3db9
03871adba35cfbd98c46538c5e9d0249287bcc583bbf32fe1561eac467b2c5d8

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 @bcs-adapters/core-adapter (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @bcs-adapters/core-adapter across your stack and pipelines.

  2. If you installed it — respond

    Remove @bcs-adapters/core-adapter 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 @bcs-adapters/core-adapter 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 @bcs-adapters/core-adapter 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. @bcs-adapters/core-adapter on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-9243-mwpj-5j2h

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @bcs-adapters/core-adapter-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.

@bcs-adapters/core-adapter (npm) malicious package — MAL-2026-3263 | O3 Security