Which versions of buildkite-test-collector-mocha-example are malicious?

The following npm versions of buildkite-test-collector-mocha-example are flagged malicious: 99.99.9. Treat any of these as compromised.

How do I remediate buildkite-test-collector-mocha-example if I installed it?

Remove buildkite-test-collector-mocha-example 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.

I already installed buildkite-test-collector-mocha-example — how do I know if it already compromised me?

If buildkite-test-collector-mocha-example was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is buildkite-test-collector-mocha-example part of a known attack campaign?

Yes — buildkite-test-collector-mocha-example is associated with the RLMA-2026-01900 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find buildkite-test-collector-mocha-example across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for buildkite-test-collector-mocha-example (version 99.99.9).

Malicious package

buildkite-test-collector-mocha-examplenpm

Advisory published Apr 16, 2026Updated Apr 23, 2026

buildkite-test-collector-mocha-example is a confirmed malicious npm package (MAL-2026-2734) that executes malicious code on install (malicious version 99.99.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in buildkite-test-collector-mocha-example (npm)

MAL-2026-2734

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall buildkite-test-collector-mocha-example

What this malware does

The package buildkite-test-collector-mocha-example was found to contain malicious code.

Malicious versions

1 flagged

99.99.9

Indicators of compromise (SHA-256)

71e43ae286ee74c51f6ebca7ea9231aaf21ef9fbff6bba6888c7374346edc691

37fbbae0cc3cfcba7b18566c1ab1f61417b1776206c3d0317956058c43ef61fa

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for buildkite-test-collector-mocha-example (version 99.99.9).
If you installed it — respond
Remove buildkite-test-collector-mocha-example 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.
Did it already run?
If buildkite-test-collector-mocha-example was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. buildkite-test-collector-mocha-example on npm has been identified as a malicious package (version 99.99.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01900

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks buildkite-test-collector-mocha-example-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.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database