MalwarePublished 26 May 2026Updated 8 Jul 2026

weavedb-base (npm) · Malicious Code

Affects weavedb-baseSource GCVE Database

Malicious package : remove weavedb-base and rotate any secrets on hosts that installed it.

Data as of 26 Oct 2026, 15:55 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-4715

What to do

Remove weavedb-base 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
npmweavedb-base	Affected =0.45.3 =0.45.4	Fixed in–

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Description

The weavedb-base npm package version 0.45.3 contains a malicious preinstall script that executes a packed Linux ELF binary during installation. This binary acts as an infostealer targeting developer credentials, cryptocurrency wallets, and uses kernel rootkit techniques to hide its presence. The malware can propagate by stealing GitHub and npm credentials to push malicious updates and publish trojanized packages. Systems with this package installed should be considered fully compromised.

Impact

Any system that installs weavedb-base version 0.45.3 on Linux is at high risk of full compromise. The malicious binary executes with the installer's privileges, potentially exposing all stored secrets and keys. The malware can steal sensitive credentials, compromise developer environments, and propagate by pushing malicious code to repositories and publishing trojanized packages. The presence of a kernel rootkit means detection and removal may be difficult, and full system compromise is likely.

Defensive guidance

Immediate removal of the package is recommended. Systems with this package installed should be considered fully compromised; all secrets and keys must be rotated from a separate, trusted environment. Due to the kernel rootkit and worm-like behavior, a full system rebuild may be necessary to ensure complete remediation.

Summary

The weavedb-base npm package version 0.45.3 includes a preinstall hook that runs a 976KB packed Linux ELF binary with capabilities including network communication, process tracing, and kernel rootkit functionality. This binary is unrelated to the package's advertised purpose and executes unconditionally during npm install without integrity checks. The malware, part of the IronWorm campaign, steals credentials for cloud providers, databases, source control, package registries, AI tools, and cryptocurrency wallets (notably injecting malicious hooks into the Exodus wallet). It also exhibits worm-like behavior by stealing GitHub and npm credentials to propagate further and uses an eBPF-based kernel rootkit to hide on Linux systems.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Jun 2026, 22:31 UTC

Technical details

References

Community reviews