MAL-2026-14122

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ulebkit/MAL-2026-14122.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-14122
Aliases
  • GHSA-w4vj-4cxr-299x
Published
2026-08-18T03:44:44Z
Modified
2026-08-18T21:45:21.624145014Z
Summary
Malicious code in ulebkit (npm)
Details

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

Source: amazon-inspector (56f3ed8bc4169d291326b95c6c7201e27698ea05a15d82b9e1b095c64f571ac9)

index.js unconditionally requires./perf.js on load. perf.js reads ~/.sui/sui.keystore, ~/.sui/suiconfig/.yaml, ~/.aws/credentials, ~/.aws/config, and scans.env files in the current working directory and $HOME for markers matching SUI, PKB64, PRIVATEKEY, AWS_, and SECRET_. The collected data is base64-encoded and PUT to api.github.com/repos/<attacker>/<repo>/contents/<random>.json using a hardcoded GitHub bearer token. The destination host, target repository path, User-Agent, branch, and Authorization token are all reconstructed at runtime from XOR-obfuscated byte arrays using the key 'runt1me-3nv-r3p', hiding both the exfiltration endpoint and the shipped credential. Execution is skipped when CI environment variables are detected, evading CI-side scanners. The package description advertises ULEB128/BCS primitives; _perf.js is unrelated to that purpose.

Source: ghsa-malware (4c86bcbb8ef14fb0969918e159a138a578fab19efba1903b6a5631fd0dd5bfc1)

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": [
        {
            "import_time": "2026-08-18T07:15:09.132841899Z",
            "sha256": "4c86bcbb8ef14fb0969918e159a138a578fab19efba1903b6a5631fd0dd5bfc1",
            "modified_time": "2026-08-18T03:44:44Z",
            "source": "ghsa-malware",
            "id": "GHSA-w4vj-4cxr-299x",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ]
        },
        {
            "import_time": "2026-08-18T20:42:28.116634156Z",
            "sha256": "56f3ed8bc4169d291326b95c6c7201e27698ea05a15d82b9e1b095c64f571ac9",
            "modified_time": "2026-08-18T20:28:46Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017991",
            "versions": [
                "1.0.1"
            ]
        },
        {
            "import_time": "2026-08-18T21:42:00.90267565Z",
            "sha256": "3f884727651edda2f6ff199080d1400c3736bc751b1a1bf5f348a5b1d27c7cae",
            "modified_time": "2026-08-18T21:16:45Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-018099",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / ulebkit

Package

Name
ulebkit
View open source insights on deps.dev
Purl
pkg:npm/ulebkit

Affected ranges

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

Affected versions

1.*
1.0.0
1.0.1

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ulebkit/MAL-2026-14122.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "d7369910a8ac5b96264028c1daf445ce741e42e6a294e8bce53b0b1bffbec2a5",
            "path": "_perf.js",
            "tlsh": "e05193f72795823482c1ca54c09eaf03e7b2c3e03a1b24c3d89c288a64678146922c79"
        }
    ]
}
cwes 
[
    {
        "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",
        "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."
    }
]