MAL-2026-13438

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/cewe-npm-cops/MAL-2026-13438.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13438
Aliases
  • GHSA-823q-q648-p3m6
Published
2026-08-06T16:16:37Z
Modified
2026-09-24T09:30:11Z
Summary
Malicious code in cewe-npm-cops (npm)
Details

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

Source: amazon-inspector (673bd57ca8632e768772381c7439b0b15008914879dfb5c22d42e40ce954c9e5)

cewe-npm-cops@99.9.9 is a dependency-confusion probe. package.json declares scripts.preinstall = 'node preinstall.js'; preinstall.js reads os.hostname() and issues a dns.lookup against <hostname>.zfir3qor582xqvyqm0tdc7xpqgw7ky8n.oastify.com, an author-controlled Burp Collaborator (Interactsh) out-of-band host. Every npm install of this package unconditionally leaks the installer's machine hostname via DNS to a third-party OOB service. The package is otherwise hollow: version is set to 99.9.9 (max-version squat designed to override an internal package of the same name during resolution), main is an empty index.js, and author is the placeholder 'Your_HackerOne_Username'. The self-described 'harmless PoC' framing does not change the behavior: installer host identity is exfiltrated to an attacker-controlled endpoint at install time.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-016668",
            "import_time":  "2026-08-06T18:09:03.518025186Z",
            "modified_time":  "2026-08-06T16:16:37Z",
            "sha256":  "673bd57ca8632e768772381c7439b0b15008914879dfb5c22d42e40ce954c9e5",
            "source":  "amazon-inspector",
            "versions":  [
                "99.9.9"
            ]
        },
        {
            "id":  "RLMA-2026-10701",
            "import_time":  "2026-09-24T09:21:33.197133082Z",
            "modified_time":  "2026-09-22T17:20:05Z",
            "sha256":  "228ac108d7e7f8f75ee930a8852036d5797842beccc55b16f539ba9eebff7c23",
            "source":  "reversing-labs",
            "versions":  [
                "99.9.9"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / cewe-npm-cops

Package

Name
cewe-npm-cops
View open source insights on deps.dev
Purl
pkg:npm/cewe-npm-cops

Affected ranges

Affected versions

99.*
99.9.9

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":  "preinstall.js",
            "sha256":  "1cc442fd670a919846700fa6c77d455d002d09cb56880d9c306ab14bbfa5cc05",
            "tlsh":  "7a01cbb018b4a6b0769566cae0c13027b5878db7ba49fc82b84fc71047c36fb835a038"
        },
        {
            "path":  "package.json",
            "sha256":  "8bd6b3edf0cbc636e8e1243cb0542e2457da31debbfbe6c2640406f78a7b9aab",
            "tlsh":  "e5d0c2748950e23338c80aea18231202a9a94d5f0214bc046bc31059636a67b45bb60e"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "cewe-npm-cops-99.9.9.tgz",
            "hashes":  {
                "sha1":  "143c5a4ef4f9695f87a70c2889059eeada82805e",
                "sha512_sri":  "sha512-bZnIZZxU6mpVfBnaLTKYvYHhBrz+l7N1J6Tc+FKtx0zlVbuyYxW8zWc0XKNzE6pmA2e/HA09cCiVowgTFDnLLw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/cewe-npm-cops/MAL-2026-13438.json"