Which versions of @uc-platform/user-service-client-ts are malicious?

The following npm versions of @uc-platform/user-service-client-ts are flagged malicious: 99.99.9. Treat any of these as compromised.

How do I remediate @uc-platform/user-service-client-ts if I installed it?

Remove @uc-platform/user-service-client-ts 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 @uc-platform/user-service-client-ts — how do I know if it already compromised me?

If @uc-platform/user-service-client-ts 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 @uc-platform/user-service-client-ts part of a known attack campaign?

Yes — @uc-platform/user-service-client-ts is associated with the RLMA-2026-01072 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 @uc-platform/user-service-client-ts across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for @uc-platform/user-service-client-ts (version 99.99.9).

Malicious package

@uc-platform/user-service-client-tsnpm

Advisory published Mar 18, 2026Updated Mar 23, 2026

@uc-platform/user-service-client-ts is a confirmed malicious npm package (MAL-2026-1641) 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 @uc-platform/user-service-client-ts (npm)

MAL-2026-1641

Immediate action

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

npm uninstall @uc-platform/user-service-client-ts

What this malware does

The package @uc-platform/user-service-client-ts was found to contain malicious code.

Malicious versions

1 flagged

99.99.9

Indicators of compromise (SHA-256)

c9a9407aa3a96c539f7d6da814074e858048cf441d4cbfbb7d2b32804ecf13ab

e3b540186390d5c469d9b5de607c8d6b64fc0315e70c245ec70c16f1732058cc

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for @uc-platform/user-service-client-ts (version 99.99.9).
If you installed it — respond
Remove @uc-platform/user-service-client-ts 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 @uc-platform/user-service-client-ts 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. @uc-platform/user-service-client-ts 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-2026-01072

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks @uc-platform/user-service-client-ts-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