MAL-2026-12421

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pvm-autodoc/MAL-2026-12421.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12421
Published
2026-08-05T12:31:04Z
Modified
2026-08-05T13:35:47.578330565Z
Summary
Malicious code in pvm-autodoc (npm)
Details

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

Source: amazon-inspector (b4f92e3ecba043a713f37e35f3162b1454e17991b2860c0923a6aa8fced87c6d)

On require('pvm-autodoc'), index.js loads bridge.js which downloads a platform-specific native binary from one of four hardcoded Cloudflare Workers subdomains (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT base64 chunked fallback under *.dl.well1.site. The destination hostnames are constructed by string-splitting and joining at runtime to evade static analysis. The fetched bytes are written to /var/tmp/.cache<hex> on POSIX or %TEMP%\dotnetdiag<hex>.exe on Windows (a name mimicking a Microsoft diagnostic tool), chmod 0755'd, and spawned detached via /bin/sh -c or cmd /c start. Opt-out variables and file naming are framed as 'analytics'/'telemetry' while the actual behavior is fetch-and-execute of an unpinned, unverified opaque native binary. A second file, lib/telemetry.js, is shipped in the tarball with the same fetch-decode-chmod-spawn primitives using concatenated API names ('child_'+'process', 'chmod'+'Sync') as a companion payload.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T12:31:04Z",
            "sha256": "b4f92e3ecba043a713f37e35f3162b1454e17991b2860c0923a6aa8fced87c6d",
            "import_time": "2026-08-05T13:08:37.565797424Z",
            "id": "IN-MAL-2026-014687",
            "versions": [
                "20.4.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / pvm-autodoc

Package

Name
pvm-autodoc
View open source insights on deps.dev
Purl
pkg:npm/pvm-autodoc

Affected ranges

Affected versions

20.*
20.4.6

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "pvm-autodoc-20.4.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-ughJpprwifYByNIg+tGzouNCHoYunDysXbGJ2QlsNcQ4LcV1ZyNaWOgWF0Q/m/+tt74p4tvYBgXYonTgG+Pf1Q==",
                "sha1": "bbdb33b378395a5251f0dfed96a47a8fbcefcd2a"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "9aa197aa02aa701847b09be5c7175415fa6bf6a33380c2d4fb5ca5985f761248272efc",
            "sha256": "2714f2e23921bae271d73662417e6559930a3ccd1ff12b6ee361a929f419d33b",
            "path": "_bridge.js"
        },
        {
            "tlsh": "ba835055566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "a8cb7c28d4860cbd9bcfef3e8f4ce477839a2ef5402d2d8b87c6e1ee5c16b6d6",
            "path": "lib/telemetry.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pvm-autodoc/MAL-2026-12421.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]