Which versions of browserstack-utils are malicious?

The following npm versions of browserstack-utils are flagged malicious: 99.0.0. Treat any of these as compromised.

How do I remediate browserstack-utils if I installed it?

Remove browserstack-utils 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 browserstack-utils — how do I know if it already compromised me?

If browserstack-utils 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 browserstack-utils part of a known attack campaign?

Yes — browserstack-utils is associated with the RLMA-2026-01896 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 browserstack-utils across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for browserstack-utils (version 99.0.0).

Malicious package

browserstack-utilsnpm

Advisory published Apr 16, 2026Updated Apr 23, 2026

browserstack-utils is a confirmed malicious npm package (MAL-2026-2730) that executes malicious code on install (malicious version 99.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in browserstack-utils (npm)

MAL-2026-2730

Immediate action

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

npm uninstall browserstack-utils

What this malware does

The package browserstack-utils was found to contain malicious code.

Malicious versions

1 flagged

99.0.0

Indicators of compromise (SHA-256)

e89119065f5cb1ef96fff116584637aa35025f3cce41035366fd77704a569b30

2a2272bbaadf2917d37e4659f060875d56de205e1b5f21ad56605c07eadfa33e

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for browserstack-utils (version 99.0.0).
If you installed it — respond
Remove browserstack-utils 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 browserstack-utils 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. browserstack-utils on npm has been identified as a malicious package (version 99.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01896

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks browserstack-utils-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