MAL-2026-6411

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/data-fetching-client/MAL-2026-6411.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6411
Aliases
  • GHSA-j99m-jc5r-9w58
Published
2026-06-25T02:16:08Z
Modified
2026-07-08T17:16:46.290820257Z
Summary
Malicious code in data-fetching-client (npm)
Details

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

Source: amazon-inspector (913d882d66d587abb1d6fe92b8b6d7353c1b4ae79fb175cc3f10b606dd5f8457)

Package self-identifies in its package.json description as a bug-bounty dependency-confusion proof-of-concept against an internal package name of the same identifier. On install, postinstall.js reads os.hostname() and the current timestamp and prints them to local stdout with a '[hubspot-poc]' marker; no network call is made and no data leaves the host. The harm in this version is limited to demonstrating that the public-registry package would resolve in place of the targeted internal package in a misconfigured build environment. The shape is a namespace-confusion publication: any consumer whose registry resolution is misconfigured would execute the author's postinstall code, and a non-PoC successor version could trivially replace the local log with arbitrary install-time behavior.

Source: ghsa-malware (7e3b28cd7d92e52caebbbc24439e3075e592ca43dbeb5cd711d4ccb3df74c1ec)

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": [
        {
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "id": "GHSA-j99m-jc5r-9w58",
            "source": "ghsa-malware",
            "import_time": "2026-06-25T03:23:52.152874348Z",
            "sha256": "7e3b28cd7d92e52caebbbc24439e3075e592ca43dbeb5cd711d4ccb3df74c1ec",
            "modified_time": "2026-06-25T02:16:09Z"
        },
        {
            "modified_time": "2026-07-08T16:35:59Z",
            "id": "IN-MAL-2026-008161",
            "source": "amazon-inspector",
            "import_time": "2026-07-08T17:01:35.604868779Z",
            "sha256": "913d882d66d587abb1d6fe92b8b6d7353c1b4ae79fb175cc3f10b606dd5f8457",
            "versions": [
                "0.0.1-poc"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / data-fetching-client

Package

Name
data-fetching-client
View open source insights on deps.dev
Purl
pkg:npm/data-fetching-client

Affected ranges

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

Affected versions

0.*
0.0.1-poc

Database specific

indicators
{
    "evidence_files": [
        {
            "path": "package.json",
            "tlsh": "19d0a7240812973374d547c55db744475af61e2a6d04911e0387259883496f285ab71e",
            "sha256": "50f7ed00981fcd813f5bd6f17d09a7ca91e52a89119ce1eff90122033fc2b814"
        },
        {
            "path": "postinstall.js",
            "tlsh": "9ad023d815cde33032f241c0d81010127227df1025157426f48d47df4681cdc76144b4",
            "sha256": "af8f638b536fa641fdc356b37a53780539a5c42c8f63c3f74cd0256b89e05784"
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/data-fetching-client/MAL-2026-6411.json"
cwes
[
    {
        "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.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]