MAL-2026-4488

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/auth-basic-vault/MAL-2026-4488.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4488
Aliases
  • GHSA-mw3r-368h-vrgv
Published
2026-05-25T10:10:49Z
Modified
2026-06-16T08:31:47Z
Summary
Malicious code in auth-basic-vault (npm)
Details

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

Source: amazon-inspector (f3227380d9ef91ce63237acc9656b88a50b29aeeb05c594b700c5936a7527543)

On require('auth-basic-vault'), lib/writer.js attempts to require('authcascade') at module top level and, on failure, shells out via execSync to npm install authcascade --no-warnings --no-save --no-progress --loglevel silent and then requires '../../authcascade/pino.js'. The fetched package is unpinned (no version constraint), not declared in package.json dependencies, and executed automatically without consent. The same file builds an error string via a long String.fromCharCode chain to mask the failure path from static analysis, and defines a getMacAddress() helper that enumerates os.networkInterfaces() to collect external IPv4 MAC addresses — host fingerprinting scaffolding for the dynamically loaded payload. Package identity is inconsistent: package.json declares 'auth-basic-vault' with a Basic Authentication description and pino-style keywords, while README presents the package as 'fabric-grachics' with unrelated example code; the codebase is pino-derived. The package exists to host the dropper, not to provide its advertised functionality.

Source: ghsa-malware (893688a0a693b578f70b05f392985d2c26be56fff19abfc7a59961f779e0cbc8)

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-2026-004620",
            "import_time": "2026-05-26T05:52:57.815905148Z",
            "modified_time": "2026-05-25T10:10:49Z",
            "sha256": "f3227380d9ef91ce63237acc9656b88a50b29aeeb05c594b700c5936a7527543",
            "source": "amazon-inspector",
            "versions": [
                "1.1.5"
            ]
        },
        {
            "id": "GHSA-mw3r-368h-vrgv",
            "import_time": "2026-06-16T08:19:54.852656311Z",
            "modified_time": "2026-06-16T06:09:16Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "893688a0a693b578f70b05f392985d2c26be56fff19abfc7a59961f779e0cbc8",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / auth-basic-vault

Package

Name
auth-basic-vault
View open source insights on deps.dev
Purl
pkg:npm/auth-basic-vault

Affected ranges

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

Affected versions

1.*
1.1.5

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": "lib/writer.js",
            "sha256": "bdb6bf1d25c0188b5c2f69ac1696e6f213097565074c0a3c2381e4976bb96e10",
            "tlsh": "ee31aedb8246a178f3706bb10e1fa0d1b586d12121507dc83efc84c267ab4e04e95fda"
        },
        {
            "path": "README.md",
            "sha256": "083a36f1a902df1b6ffbddf94136d593350431b2d786393b9b47289f704c684f",
            "tlsh": "72d0123833c85a657c2206726d6611191f08cd9317122dcc5d9510bd771f8b2765290f"
        }
    ],
    "package_integrity": [
        {
            "filename": "auth-basic-vault-1.1.5.tgz",
            "hashes": {
                "sha1": "fe3f7e87ce53fc2d957f22ad4757a01b75c535fd",
                "sha512_sri": "sha512-8zWRtCL5iMUg3mfxu2Lr3fJwORay4Q/yRGb+UbOFz3nJPDVa66oFP2GkCnyrawQtmyERN1H9MsfjCcDkGNeCpA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/auth-basic-vault/MAL-2026-4488.json"