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Malicious package

overstock-jenkinsnpm

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

MAL-2026-515
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall overstock-jenkins

What this malware does

The package overstock-jenkins 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.

The OpenSSF Package Analysis project identified 'overstock-jenkins' @ 1.4.6 (npm) as malicious.

It is considered malicious because:

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

Malicious versions

5 flagged
1.3.41.4.51.4.61.4.71.9.1

Indicators of compromise (SHA-256)

86ffa9071d8c4d4ea1e70d85b922fc876aeab35d859b187dbe77ad789e054d18
1bab207baf3fa157c3d168739ae38cc75e77b5c999d1d5f14d95b111bf94a87e
2e2e6192f2c2ee70fd3ed1a8090dfcc7dd9743146bb162399c8fcb2673d63634
cc54aa439cfe75c6288622ab0ad04cd9c49de8e388c558a2a96b68469d07d479
f0a756c07f2354f67e2960d6ac645d17f1fb8f68da25f6ac7cbb9a3ab2e1a1ae
02a22d77d6dca6fd9590bdd67bdd184141bb84bc2449b91b9f3f8f6b190f07f0
da8c5441a7b9b1ad7193650b05275dc85626691e1fa1f04bb0f21783fa75673c

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 overstock-jenkins (5 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging overstock-jenkins across your stack and pipelines.

  2. If you installed it — respond

    Remove overstock-jenkins 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 overstock-jenkins 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 overstock-jenkins 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. overstock-jenkins on npm has been identified as a malicious package (versions 1.3.4, 1.4.5, 1.4.6, 1.4.7, 1.9.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-wg22-7286-wgvx

References

Credits

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

Detect & block this

O3 blocks overstock-jenkins-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.

overstock-jenkins (npm) malicious package — MAL-2026-515 | O3 Security