Which versions of chai-as-disarmed are malicious?

The following npm versions of chai-as-disarmed are flagged malicious: 3.2.3. Treat any of these as compromised.

How do I remediate chai-as-disarmed if I installed it?

chai-as-disarmed is a typosquat — you almost certainly intended a legitimately-named package. Remove chai-as-disarmed, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

I already installed chai-as-disarmed — how do I know if it already compromised me?

If chai-as-disarmed 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-as-disarmed part of a known attack campaign?

Yes — chai-as-disarmed is associated with the IN-MAL-2026-009121 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-as-disarmed across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for chai-as-disarmed (version 3.2.3).

Malicious package

chai-as-disarmednpm

Advisory published Jul 9, 2026Updated Jul 9, 2026

chai-as-disarmed is a confirmed malicious npm package (MAL-2026-10042) that typosquats a legitimate package to trick installs (malicious version 3.2.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in chai-as-disarmed (npm)

MAL-2026-10042

Immediate action

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

npm uninstall chai-as-disarmed

What this malware does

Package name typosquats chai-as-promised while the README and keywords impersonate pino to bait installs. On require(), index.js detach-spawns lib/caller.js, which decodes a base64-stored URL to https://api.jsonstorage.net/v1/json/2ef8c758-.../a179ea35-..., issues an authenticated GET (header name and value are also base64-hidden inside a local object that shadows process.env), and executes the returned .cookie string via new Function.constructor('require', s)(require) — granting the remote operator arbitrary code execution in the installer's Node.js process with full require access. The fetch retries up to 5 times. The remote content sits in a mutable third-party JSON store, so the executed payload can be swapped at any time without republishing the package. None of this behavior corresponds to the advertised chai/pino functionality.

Malicious versions

1 flagged

3.2.3

Indicators of compromise (SHA-256)

b6d396201a3dd1706d97f7daa880f254c920bbea65ea6b013ed48f78a21a0241

Detection & response playbook

Typosquat

Find it
Search your lockfiles and build artifacts for chai-as-disarmed (version 3.2.3).
If you installed it — respond
chai-as-disarmed is a typosquat — you almost certainly intended a legitimately-named package. Remove chai-as-disarmed, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If chai-as-disarmed 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-as-disarmed on npm has been identified as a malicious package (version 3.2.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-009121

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks chai-as-disarmed-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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