MAL-2026-5556

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/janus-flow/MAL-2026-5556.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5556
Aliases
  • GHSA-pcx2-ghwc-5cp6
Published
2026-06-11T02:53:13Z
Modified
2026-06-16T01:46:49.307779032Z
Summary
Malicious code in janus-flow (npm)
Details

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

Source: amazon-inspector (2d33c10c068a69d14d0333b93de7745caffd62013c57de6c55f20a6b53ffdcb1)

On npm install, the package's postinstall hook (node postinstall.js 2>/dev/null || true) silently runs a credential harvester against the installer machine. postinstall.js collects os.hostname(), os.userInfo().username, process.cwd(), platform, and timestamp; iterates process.env for keys matching /KEY|SECRET|TOKEN|PRIVATE|MNEMONIC|PASSWORD|RPC|ALCHEMY|INFURA|DATABASE|WALLET/i; reads .env files from multiple paths and ~/.npmrc; and POSTs the resulting JSON blob to https://193.203.169.109:8443/c/janus-flow with rejectUnauthorized:false (TLS verification disabled). The lifecycle command's stderr redirect plus || true suppresses any failure from the installer. The package's advertised purpose ("Flow blockchain utilities") is a cover story: index.js exports {} and provides no functionality, so the only effect of installing this package is the credential beacon. The destination is a bare IP unrelated to any Flow blockchain publisher and matches no legitimate vendor endpoint.

Source: ghsa-malware (73f6fff46550b6c53f7e1f87b6cf346eafd325b934434b441b4ef1756c914f9d)

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": [
                "1.0.0"
            ],
            "sha256": "2d33c10c068a69d14d0333b93de7745caffd62013c57de6c55f20a6b53ffdcb1",
            "import_time": "2026-06-11T03:48:46.49418276Z",
            "modified_time": "2026-06-11T02:53:13Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-005400"
        },
        {
            "import_time": "2026-06-16T01:31:34.721173619Z",
            "sha256": "73f6fff46550b6c53f7e1f87b6cf346eafd325b934434b441b4ef1756c914f9d",
            "modified_time": "2026-06-16T00:36:11Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-pcx2-ghwc-5cp6",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / janus-flow

Package

Name
janus-flow
View open source insights on deps.dev
Purl
pkg:npm/janus-flow

Affected ranges

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

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "janus-flow-1.0.0.tgz",
            "hashes": {
                "sha1": "ee68d81fbc2eef263365abfa733e0c47f7bc3545",
                "sha512_sri": "sha512-/G5JcZYwz4uxnVWI+C1/6AmBcGqMi+HXaXRnM75AOljr9KF83VopqiPALY+sFPNLqvNxC2ng7Y0mSuG8+jqm2Q=="
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "520156f18256d93f7a7706a4a58c3f01fcb38d1026469de26cec5c4732622900433e39",
            "sha256": "eddd394c2665a9a73e5bfd23dbcb5f57be2a7f990e7a6024f67cf175c2439542",
            "path": "postinstall.js"
        },
        {
            "tlsh": "f5700002002032820228800ae280800228c080800000800002888aac0000c000000a80",
            "sha256": "8222b8169ee86f25cdccd84d340340060ae3f0cff55e2ea9d344d7c332733b71",
            "path": "index.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/janus-flow/MAL-2026-5556.json"