MalwarePublished 11 Aug 2026

internallib_v164 (npm) · Malicious Code

Affects internallib_v164Source GCVE Database

Malicious package : remove internallib_v164 and rotate any secrets on hosts that installed it.

Data as of 12 Aug 2026, 16:58 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-13764

What to do

Remove internallib_v164 from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npminternallib_v164	Affected 1.0.7 – 6.0.9 4 affected builds	Fixed in–

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Description

The internallib_v164 npm package contains malicious code that executes a reverse shell command upon invocation. This command fetches and runs a script from a remote server, opening an interactive shell to a hardcoded internal network address. This behavior grants an attacker arbitrary code execution and persistent access on the host machine. The affected package versions include 6.0.9, 4.0.9, 1.0.7, and 1.0.9. Removal of the package alone may not fully remediate the compromise, as the attacker may have already established persistent control. Immediate secret and key rotation from a different, uncompromised system is strongly advised.

Impact

Hosts with the affected internallib_v164 package versions installed and invoked are fully compromised, as the package opens a reverse shell to an attacker-controlled internal network address. This grants the attacker arbitrary code execution and persistent interactive access, potentially exposing all secrets and keys stored on the host. The compromise is severe and may allow lateral movement within internal networks. Removal of the package alone is insufficient to ensure system integrity.

Defensive guidance

Immediate removal of the internallib_v164 package versions 6.0.9, 4.0.9, 1.0.7, and 1.0.9 is recommended. However, because the package grants full control to an attacker, it is critical to assume full system compromise. All secrets and keys stored on the affected host should be rotated immediately from a separate, uncompromised system. Comprehensive incident response and forensic analysis should be conducted to identify and remove any additional malicious artifacts or persistence mechanisms.

Summary

The internallib_v164 npm package exports a function that runs a shell command executing a curl request to a remote server (reverse-shell.sh) at the IP 10.0.72.234:4444, piping the downloaded script to sh. This results in an outbound interactive reverse shell connection to the attacker-controlled internal network address, enabling arbitrary code execution and persistent interactive access on the compromised host. The malicious behavior is triggered when the exported function is invoked by a consumer of the package. The affected versions are explicitly 6.0.9, 4.0.9, 1.0.7, and 1.0.9. Due to the nature of the compromise, full system control by an attacker is likely, and simple removal of the package does not guarantee full remediation.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 12 Aug 2026, 16:58 UTC

Technical details

References

Community reviews