MAL-2026-11034

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/eth-slint/MAL-2026-11034.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-11034
Aliases
  • GHSA-xp97-c4c4-7928
Published
2026-07-23T20:10:38Z
Modified
2026-08-04T23:05:04Z
Summary
Malicious code in eth-slint (npm)
Details

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

Source: amazon-inspector (4bdbbc1ccc748bfe5ad640ed4e54ed5285a526a78a198ac2bf64727b7730d54d)

eth-slint is a typosquat of web3-core-subscriptions. src/index.js contains a clean 2119-byte copy of the legitimate web3.js subscriptions module, while lib/index.js (the shipped main entry) contains that same code plus an appended ~149KB obfuscated blob passed to a top-level Function(...) constructor with a custom decoder routine, signed-int mixing table, and hex-escaped byte array. The Function() invocation fires at module load time, executing the decoded payload on the installer's host whenever the package is required or imported. The payload is present only in lib/, not in src/, indicating post-build injection rather than a normal compilation artifact.

Source: ghsa-malware (a547e155b232bc3164db9fc1f7de92bf70a5f1ad02e277a6c9b272d47f48e00d)

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": "GHSA-xp97-c4c4-7928",
            "import_time": "2026-07-23T22:48:43.771129552Z",
            "modified_time": "2026-07-23T20:10:38Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "a547e155b232bc3164db9fc1f7de92bf70a5f1ad02e277a6c9b272d47f48e00d",
            "source": "ghsa-malware"
        },
        {
            "id": "IN-MAL-2026-011155",
            "import_time": "2026-08-04T22:30:02.224394484Z",
            "modified_time": "2026-08-04T21:40:23Z",
            "sha256": "4bdbbc1ccc748bfe5ad640ed4e54ed5285a526a78a198ac2bf64727b7730d54d",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / eth-slint

Package

Name
eth-slint
View open source insights on deps.dev
Purl
pkg:npm/eth-slint

Affected ranges

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

Affected versions

1.*
1.0.0

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/index.js",
            "sha256": "5804173db25c1cc45f99a006c4b649548b6c5206c528df944af65394d1ea6b63",
            "tlsh": "16e3ab4029927428a90dc1e245b88ffec747599ea748b85fe142e4daf1f4bf354fca18"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/eth-slint/MAL-2026-11034.json"