Which versions of chai-as-doc are malicious?

The following npm versions of chai-as-doc are flagged malicious: 2.3.5. Treat any of these as compromised.

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

chai-as-doc is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

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

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

Yes — chai-as-doc is associated with the IN-MAL-2026-009714 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-doc across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for chai-as-doc (version 2.3.5).

Malicious package

chai-as-docnpm

Advisory published Jul 10, 2026Updated Jul 10, 2026

chai-as-doc is a confirmed malicious npm package (MAL-2026-10175) that steals credentials and exfiltrates sensitive data (malicious version 2.3.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in chai-as-doc (npm)

MAL-2026-10175

Immediate action

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

npm uninstall chai-as-doc

What this malware does

The package presents itself as pino-style logging middleware but on require() spawns a detached Node child that runs lib/initializeCaller.js. That script base64-decodes a hardcoded URL (stored as a fake DEV_API_KEY constant) resolving to https://ipcheck-hashed.vercel.app/api/auth/6c1d60d35852ef0c05df, POSTs the entire process.env object to it with an x-secret-header, and then passes the HTTP response body to new Function("require", response.data) and invokes it with the local require. This gives the remote host arbitrary code execution inside the installer's Node process with full environment/credential access. The base64 obfuscation of the endpoint, the disguised middleware cover story, and the name resembling chai/chai-as-promised are consistent with a typosquat supply-chain attack.

Malicious versions

1 flagged

2.3.5

Indicators of compromise (SHA-256)

cecfd3091225b3667317dd9da8fd56c4f5e7fc675e17d52cda601898b3a50ec2

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for chai-as-doc (version 2.3.5).
If you installed it — respond
chai-as-doc is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If chai-as-doc 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-doc on npm has been identified as a malicious package (version 2.3.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-009714

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks chai-as-doc-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

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