Which versions of chai-extention-utils are malicious?

The following npm versions of chai-extention-utils are flagged malicious: 1.4.1. Treat any of these as compromised.

How do I remediate chai-extention-utils if I installed it?

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

If chai-extention-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 chai-extention-utils part of a known attack campaign?

Yes — chai-extention-utils is associated with the RLMA-2026-05008, RLUA-2026-06137 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 chai-extention-utils across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for chai-extention-utils (version 1.4.1).

Malicious package

chai-extention-utilsnpm

Advisory published Jul 7, 2026Updated Sep 1, 2026

chai-extention-utils is a confirmed malicious npm package (MAL-2026-7243) that executes malicious code on install (malicious version 1.4.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in chai-extention-utils (npm)

MAL-2026-7243

Immediate action

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

npm uninstall chai-extention-utils

Malicious versions

1 flagged

1.4.1

Indicators of compromise (SHA-256)

4cabb03689893b7728199e51bfe95558278845657119fad6de4e5b7b67f34f91

0ccee8c30052d04674bf7130f1c630fdb43ed631b927dfaf80db16bf7ecc8c6d

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for chai-extention-utils (version 1.4.1).
If you installed it — respond
Remove chai-extention-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 chai-extention-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. chai-extention-utils on npm has been identified as a malicious package (version 1.4.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-05008RLUA-2026-06137

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks chai-extention-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

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