MAL-2026-5194

    Dashboard / Malicious Package / MAL-2026-5194

    MAL-2026-5194

    Published: 4 Jun 2026Last Modified: 5 Jun 2026

    Summary: Malicious code in yaml-javascript (npm)

    Details: Source: google-open-source-security (d83c3b506a10b770a8c1f98d280262478cccc65708bb1066a72e0708dccaaf75) This malicious package is part the IronWorm campaign. This campaign executes a malicious binary payload during installation via a preinstall hook. The payload is a Rust-built infostealer that targets developer environments, scanning for and harvesting credentials related to cloud providers, object storage, databases, source-control, package registries, and AI developer tools. It also targets cryptocurrency wallets, specifically injecting a malicious JavaScript hook into the Exodus desktop wallet to capture passwords and recovery phrases. Furthermore, the malware exhibits worm-like behavior by stealing GitHub and NPM credentials to push malicious updates to the victim's repositories and publish trojanized packages, and it uses an eBPF-based kernel rootkit to hide its processes and network connections on Linux systems.

    References: http://www.ox.security/blog/ironworm-supply-chain-malware-hits-npm/, https://research.jfrog.com/post/iron-worm-shai-hulud-rustier-cousin/

    Affected packages

    Package

    Name: yaml-javascript

    Purl: pkg:npm/yaml-javascript

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    4.1.2