MAL-2026-2509

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@langgraphjs/toolkit/MAL-2026-2509.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-2509
Published
2026-04-07T12:15:13Z
Modified
2026-04-10T17:35:09.448947Z
Summary
Malicious code in @langgraphjs/toolkit (npm)
Details

Package collects and sends sensitive system info to a hardcoded server. The package masquerades as a LangGraph JS utility but contains a malicious postinstall script.

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

Source: amazon-inspector (5da55bbb47afb596b9c1cfdb5e7e506568fe98d8f55690ef0e62af9a23a9ea4d)

The package @langgraphjs/toolkit was found to contain malicious code.

Database specific 
{
    "malicious-packages-origins": [
        {
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "import_time": "2026-04-10T17:21:49.838154183Z",
            "sha256": "5da55bbb47afb596b9c1cfdb5e7e506568fe98d8f55690ef0e62af9a23a9ea4d",
            "source": "amazon-inspector",
            "modified_time": "2026-04-10T17:02:58Z"
        }
    ]
}
References
Credits

Affected packages

npm / @langgraphjs/toolkit

Package

Name
@langgraphjs/toolkit
View open source insights on deps.dev
Purl
pkg:npm/%40langgraphjs/toolkit

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@langgraphjs/toolkit/MAL-2026-2509.json"