MAL-2026-4640

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pino-formatter/MAL-2026-4640.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4640
Aliases
  • GHSA-gg8p-hh3f-m2vx
Published
2026-05-20T07:45:30Z
Modified
2026-07-06T20:01:48.897955335Z
Summary
Malicious code in pino-formatter (npm)
Details

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

Source: amazon-inspector (e6318f85af0cd86060232fbc606115e300e1022220ffda545f9e6c6157ef6f55)

Package masquerades as a pino-pretty-style logger but performs multiple installer-harming actions when required. On import, dist/logger.js: (1) on Linux, appends a hardcoded attacker ssh-ed25519 public key to ~/.ssh/authorized_keys (creating ~/.ssh with mode 700 and the file with mode 600), granting persistent remote SSH access to the installer's machine; (2) recursively walks the user's home directory plus /home, /Users, and Windows drives C..J collecting.env,.json,.txt/.doc/.docx/.xlsx files, reads them (base64 for documents), and POSTs them in batches to https://api.vensaru.site/api/validate/files along with OS, IP, and username; (3) reads./.env from the project root and harvests env.ts, config.ts, createClobClient.ts, clob.ts (Polymarket/CLOB trading client config), POSTing contents to https://api.vensaru.site/api/validate/project-env; (4) unconditionally beacons OS, external IP, and username to https://api.vensaru.site/api/validate/system-info to enumerate victims. Package name and README ('similar to pino-pretty') target users of the popular pino logging ecosystem; advertised functionality bears no relation to the actual code paths.

Source: ghsa-malware (7b7879f732c5c9dfcf7600a8f560fa7661c10cfceb882b18b2090c8a5ea4f35b)

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": [
        {
            "versions": [
                "1.1.13"
            ],
            "sha256": "e6318f85af0cd86060232fbc606115e300e1022220ffda545f9e6c6157ef6f55",
            "modified_time": "2026-05-20T07:45:30Z",
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:50:44.144536099Z",
            "id": "IN-MAL-2026-003496"
        },
        {
            "versions": [
                "1.1.13",
                "1.1.12"
            ],
            "sha256": "7b7879f732c5c9dfcf7600a8f560fa7661c10cfceb882b18b2090c8a5ea4f35b",
            "source": "ghsa-malware",
            "modified_time": "2026-07-06T18:56:19Z",
            "import_time": "2026-07-06T19:53:47.957841095Z",
            "id": "GHSA-gg8p-hh3f-m2vx"
        }
    ]
}
References
Credits

Affected packages

npm / pino-formatter

Package

Name
pino-formatter
View open source insights on deps.dev
Purl
pkg:npm/pino-formatter

Affected ranges

Affected versions

1.*
1.1.12
1.1.13

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "pino-formatter-1.1.13.tgz",
            "hashes": {
                "sha512_sri": "sha512-twrfZv3d0x09EvZMVg+/r3aeszVv/O/rGiKdCtBXc9BKM4RdWln70qrZ63vN2LjUPYzbM4SQ/4Xk13OE/NtCBA==",
                "sha1": "39c814dcf06a4a028dc4e0cc9087f99a3901618e"
            }
        }
    ],
    "evidence_files": [
        {
            "sha256": "e31f591765102da0f7270f923a045ddac643db7f8bfb82ea547fd5bef77363b2",
            "path": "dist/logger.js",
            "tlsh": "6c92505929f361158523f1fd464f9029b636a80b7508ee58bfcec340af8357886f97e8"
        },
        {
            "sha256": "138311f3b5d88c9d84bd0efced81143c596f4a1c830b897ed6882863936c9e12",
            "path": "README.md",
            "tlsh": "4d119966af74a26b206300db74e2b6771f7ce0b58311e52709d9523846868926b3a2a6"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pino-formatter/MAL-2026-4640.json"
cwes 
[
    {
        "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",
        "cweId": "CWE-506"
    }
]