Which versions of tsdoc-build-rig are malicious?

The following npm versions of tsdoc-build-rig are flagged malicious: 99.12.9. Treat any of these as compromised.

How do I remediate tsdoc-build-rig if I installed it?

Remove tsdoc-build-rig 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 tsdoc-build-rig — how do I know if it already compromised me?

If tsdoc-build-rig 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.

How do I find tsdoc-build-rig across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for tsdoc-build-rig (version 99.12.9).

Malicious package

tsdoc-build-rignpm

Advisory published Apr 22, 2026Updated Apr 23, 2026

tsdoc-build-rig is a confirmed malicious npm package (MAL-2026-2979) that executes malicious code on install (malicious version 99.12.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in tsdoc-build-rig (npm)

MAL-2026-2979

Immediate action

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

npm uninstall tsdoc-build-rig

What this malware does

The package tsdoc-build-rig was found to contain malicious code.

The OpenSSF Package Analysis project identified 'tsdoc-build-rig' @ 99.12.9 (npm) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged

99.12.9

Indicators of compromise (SHA-256)

d968b752858b945ac204e28c01591fabd101dc13fb76fe3bd083ae1143a4962f

fa9483578294aa1f05417210a36c0840de9fe1104aa1c36c6cad6f0ac4fe4760

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for tsdoc-build-rig (version 99.12.9).
If you installed it — respond
Remove tsdoc-build-rig 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 tsdoc-build-rig 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. tsdoc-build-rig on npm has been identified as a malicious package (version 99.12.9 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 tsdoc-build-rig-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

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