MAL-2026-16339

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pf25133/MAL-2026-16339.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16339
Aliases
  • GHSA-8f7g-cf69-g5p8
Published
2026-09-21T03:32:43Z
Modified
2026-10-01T04:45:48Z
Summary
Malicious code in pf25133 (npm)
Details

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

Source: amazon-inspector (504c3f95c937a05e14c220c767a0e18f4cada866ee5eebad0749457232ace73b)

The package's declared main module index.js is an IIFE that reads document.cookie, fetches a hardcoded list of application paths, extracts flag-shaped patterns from the responses, and POSTs the aggregated data as JSON to a hardcoded webhook.site collector URL (https://webhook.site/c4e39647-bfb8-47ef-b6d4-a112aacc6cd1). The behavior is unconditional on load and the destination is not configurable. webhook.site is a generic anonymous request-bin service unrelated to any legitimate first-party endpoint, and the package ships no functionality other than this collection payload.

Source: ghsa-malware (2a468a0f803545c964b7fd5cf12d9a26dd7be416ee34d3d3728edecf99d5031f)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020243",
            "import_time":  "2026-09-21T03:46:39.253563921Z",
            "modified_time":  "2026-09-21T03:32:43Z",
            "sha256":  "504c3f95c937a05e14c220c767a0e18f4cada866ee5eebad0749457232ace73b",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        },
        {
            "id":  "GHSA-8f7g-cf69-g5p8",
            "import_time":  "2026-10-01T04:32:29.792062864Z",
            "modified_time":  "2026-10-01T03:42:02Z",
            "ranges":  [
                {
                    "events":  [
                        {
                            "introduced":  "0"
                        }
                    ],
                    "type":  "SEMVER"
                }
            ],
            "sha256":  "2a468a0f803545c964b7fd5cf12d9a26dd7be416ee34d3d3728edecf99d5031f",
            "source":  "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / pf25133

Package

Name
pf25133
View open source insights on deps.dev
Purl
pkg:npm/pf25133

Affected ranges

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

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"
    },
    {
        "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":  "0d562fbe1e816fb21df7acb49b0f5d293045219699ab0d0afc92e66545e68ae6",
            "tlsh":  "99f0dc222e7d102c0a80bacf213bb3b0dc10d815b893cdd483980f3e5b060da58a1294"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "pf25133-1.0.0.tgz",
            "hashes":  {
                "sha1":  "ca711fc5033de59190fb6242e4841c90d30f6c84",
                "sha512_sri":  "sha512-XJG0w20lV5ePvlxW+vULkH4I7h8TAIsI57ftq8rei3YIcEYYUu4BUBDjTN3FwktqApPxk2zbbWx6r9UdWC266w=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pf25133/MAL-2026-16339.json"