MAL-2026-16365

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/my-ctf-helper-script-9921/MAL-2026-16365.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16365
Published
2026-09-21T19:48:21Z
Modified
2026-09-21T20:30:13Z
Summary
Malicious code in my-ctf-helper-script-9921 (npm)
Details

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

Source: amazon-inspector (41ee1dafe6dce8750ac695c9d13e13c2808e2f35d94bbbcc41a4444a02541409)

On require/import, the package's main module executes a top-level fetch to the hardcoded collector URL https://webhook.site/99e9df7b-fe86-4c60-822a-5352b1f9edf0/, appending document.cookie as a query-string parameter. The package has no other advertised functionality; the sole effect of loading it is to send the ambient cookie value to a third-party webhook capture endpoint controlled by whoever provisioned that webhook.site token. webhook.site is a generic ad-hoc data-collection service, unrelated to any legitimate publisher infrastructure.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020273",
            "import_time":  "2026-09-21T20:17:15.530688412Z",
            "modified_time":  "2026-09-21T19:48:21Z",
            "sha256":  "41ee1dafe6dce8750ac695c9d13e13c2808e2f35d94bbbcc41a4444a02541409",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / my-ctf-helper-script-9921

Package

Name
my-ctf-helper-script-9921
View open source insights on deps.dev
Purl
pkg:npm/my-ctf-helper-script-9921

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "index.js",
            "sha256":  "969a8ea8d6504dfc91c3cbdd09fc3a086589d30f33c7167610c84062c8d509b1",
            "tlsh":  "06b012ba3506d838195dc0545329ba0ced9573068c87b54acb35abf40fd11138e841f6"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "my-ctf-helper-script-9921-1.0.0.tgz",
            "hashes":  {
                "sha1":  "43105e5076382a1fe90fe13cd9cb24d0b670988a",
                "sha512_sri":  "sha512-7YpIBzgVkVsH82YB8DBILno3dc7hV9B3vM8al3qoN6SMPoIJ0TFQ/J22xBd5nT33lyic62nibwmOYNP7vLqj4g=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/my-ctf-helper-script-9921/MAL-2026-16365.json"