MAL-2026-4670

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/skills-detector/MAL-2026-4670.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4670
Aliases
  • GHSA-wxv4-4mmm-mmm9
Published
2026-05-25T18:53:42Z
Modified
2026-05-27T13:46:42.897117933Z
Summary
Malicious code in skills-detector (npm)
Details

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

Source: amazon-inspector (844190b21455d308d6e2b5305ebe92634d80b55817290a84644a1048df0e54b3)

On npm install, postinstall.js executes whoami and id via childprocess.execSync, collects os.hostname(), os.platform(), current working directory, and the CI / GITHUBREPOSITORY / NODE_ENV environment variables, and sends them via HTTPS GET to the hardcoded host 0bcdniet6uubfi1lkxgx8qhpcgid65uu.oastify.com (Burp Collaborator out-of-band-exfiltration domain). It also issues a DNS lookup of <whoami>.0bcdniet6uubfi1lkxgx8qhpcgid65uu.oastify.com as a secondary OAST exfiltration channel. The package self-describes as a 'Security research canary' but is published on the public registry and runs unconditionally on any installer's machine, leaking host identity and CI/GitHub repository context to a third party.

Source: ghsa-malware (65daf45d03c11c27cbf1be53eefe496baf57ab0319078e92875e2cb3dd72aec1)

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.

Source: ossf-package-analysis (9af466aa8c67f5897bfd2f2361407e596caa4adfb77bc5ca813992ccd9f4302c)

The OpenSSF Package Analysis project identified 'skills-detector' @ 2.0.5 (npm) as malicious.

It is considered malicious because:

  • The package executes one or more commands associated with malicious behavior.
Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-05-25T18:53:42Z",
            "versions": [
                "2.0.4"
            ],
            "sha256": "844190b21455d308d6e2b5305ebe92634d80b55817290a84644a1048df0e54b3",
            "id": "IN-MAL-2026-004757",
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:53:13.520710565Z"
        },
        {
            "modified_time": "2026-05-25T18:53:42Z",
            "versions": [
                "2.0.4"
            ],
            "sha256": "af28b26c14bc396bcafb2883baa3676cd0514938039aa041a4d7ae376cbdeb6e",
            "id": "IN-MAL-2026-004758",
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:53:13.619078963Z"
        },
        {
            "modified_time": "2026-05-26T03:19:46Z",
            "versions": [
                "2.0.5"
            ],
            "sha256": "9af466aa8c67f5897bfd2f2361407e596caa4adfb77bc5ca813992ccd9f4302c",
            "source": "ossf-package-analysis",
            "import_time": "2026-05-26T05:50:08.508819557Z"
        },
        {
            "import_time": "2026-05-27T13:34:11.955247831Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "65daf45d03c11c27cbf1be53eefe496baf57ab0319078e92875e2cb3dd72aec1",
            "id": "GHSA-wxv4-4mmm-mmm9",
            "source": "ghsa-malware",
            "modified_time": "2026-05-27T13:25:09Z"
        }
    ]
}
References
Credits

Affected packages

npm / skills-detector

Package

Name
skills-detector
View open source insights on deps.dev
Purl
pkg:npm/skills-detector

Affected ranges

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

Affected versions

2.*
2.0.4
2.0.5

Database specific

indicators 
{
    "domains": [
        "0bcdniet6uubfi1lkxgx8qhpcgid65uu.oastify.com",
        "scan.0bcdniet6uubfi1lkxgx8qhpcgid65uu.oastify.com"
    ],
    "evidence_files": [
        {
            "sha256": "78fced90fdf05b6fe9549cc8cc6ae81617161267acde8f081ca29430aa94577c",
            "tlsh": "ef011ef063f4eab058e31dc0e1258c12b137e0143300b9e03cac9354af899b808b5cdc",
            "path": "postinstall.js"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-2JHQl/kuLxZ3NPBJ0iT4CLIWzOGYFwqjQFpgiC2Se81TYNJL5OANFEgEQ/mDKbwz1pBoq+ktAQuf6Wu2mw1CnA==",
                "sha1": "fc1579606974d110e708491cd3bc8079b4a7ddb0"
            },
            "filename": "skills-detector-2.0.4.tgz"
        }
    ]
}
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"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/skills-detector/MAL-2026-4670.json"