MAL-2026-15597

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/npx-oob-package/MAL-2026-15597.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-15597
Published
2026-08-29T20:55:31Z
Modified
2026-08-31T17:30:11.695518505Z
Summary
Malicious code in npx-oob-package (npm)
Details

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

Source: amazon-inspector (6302c47700c024cb727f6139b5cd8703da7c295555525ce9624c12b536f76dde)

npx-oob-package ships bin/cli.js which is also declared as the package main. On both CLI invocation and any require()/import of the package, the module collects local identifiers (whoami / os.userInfo(), os.hostname(), os.platform()) along with the package name and POSTs them via fetch() to a hardcoded Cloudflare Workers endpoint at https://oobme.kunalsharma0553.workers.dev/r/7bq6fz3l15r9. The callback destination is not configurable and there is no user consent or opt-out. The package presents as an out-of-band (OOB) beacon consistent with dependency-confusion or pentest-style reconnaissance, causing installer host and user identifiers to leave the machine to an author-controlled endpoint on install-triggered require or CLI use.

Source: ossf-package-analysis (97f657a8f0fdcb9bebaa6ad7caf2775f059ee15fd9e721d1ca66e5bd239ba42c)

The OpenSSF Package Analysis project identified 'npx-oob-package' @ 1.0.2 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

  • The package executes one or more commands associated with malicious behavior.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-30T23:14:56.02632165Z",
            "source": "ossf-package-analysis",
            "versions": [
                "1.0.2"
            ],
            "modified_time": "2026-08-29T20:55:31Z",
            "sha256": "97f657a8f0fdcb9bebaa6ad7caf2775f059ee15fd9e721d1ca66e5bd239ba42c"
        },
        {
            "import_time": "2026-08-31T17:16:14.830257581Z",
            "id": "IN-MAL-2026-019180",
            "versions": [
                "1.0.2"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-31T16:50:00Z",
            "sha256": "6302c47700c024cb727f6139b5cd8703da7c295555525ce9624c12b536f76dde"
        }
    ]
}
References
Credits

Affected packages

npm / npx-oob-package

Package

Name
npx-oob-package
View open source insights on deps.dev
Purl
pkg:npm/npx-oob-package

Affected ranges

Affected versions

1.*
1.0.2

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/npx-oob-package/MAL-2026-15597.json"
indicators 
{
    "evidence_files": [
        {
            "path": "bin/cli.js",
            "tlsh": "94112dea50f553b0bfa22c944d2f50003297c7673c09fcc0faac0359af4ea5c41325a8",
            "sha256": "7bb9e78369c5381ad92a3997176d860469dcbd35fef2d80123dadf978eb15649"
        }
    ],
    "package_integrity": [
        {
            "filename": "npx-oob-package-1.0.2.tgz",
            "hashes": {
                "sha1": "ceaaec896c8d6d6fd127924c663c3b9471a6e8f4",
                "sha512_sri": "sha512-cghOwTB4BCaDNQULMo+/8k0Z60bclNk/GgUcq1J1J7u+8BvfL08ohlhGjc1WzJbTd1HrfJNRFiELl7BTGM/UTw=="
            }
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]