MAL-2026-5194

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/yaml-javascript/MAL-2026-5194.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5194
Published
2026-06-04T22:27:40Z
Modified
2026-06-05T01:46:51.591409459Z
Summary
Malicious code in yaml-javascript (npm)
Details

-= Per source details. Do not edit below this line.=-

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.

Database specific
{
    "malicious-packages-origins": [
        {
            "versions": [
                "4.1.2"
            ],
            "sha256": "d83c3b506a10b770a8c1f98d280262478cccc65708bb1066a72e0708dccaaf75",
            "source": "google-open-source-security",
            "modified_time": "2026-06-04T22:28:51.769005667Z",
            "import_time": "2026-06-05T00:24:25.065752Z"
        }
    ]
}
References

Affected packages

npm / yaml-javascript

Package

Affected ranges

Affected versions

4.*
4.1.2

Database specific

source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/yaml-javascript/MAL-2026-5194.json"