MAL-2026-14056

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/gunzip-js/MAL-2026-14056.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-14056
Published
2026-08-15T15:31:09Z
Modified
2026-08-15T19:00:11.311842586Z
Summary
Malicious code in gunzip-js (npm)
Details

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

Source: amazon-inspector (d410844f9db44f33c2f674456c727d4c46402ad8f4de02a036fec3b099b2737b)

gunzip-js@99.9.1 is a near-empty npm package (typosquat of the well-known gunzip-maybe / gunzip family) whose package.json declares its sole dependency ltidisafe as an HTTPS tarball URL — https://ltidi.storage.googleapis.com/depenconf/ltidisafe-3.7.2.tgz — instead of a version resolved from the npm registry. On npm install, npm downloads that tarball from the anonymous Google Cloud Storage bucket and installs it into node_modules, executing any lifecycle scripts (preinstall/install/postinstall) and any top-level code reached via require. The GCS bucket is not associated with any known publisher, the path segment depenconf mirrors the term dependency-confusion, the version 99.9.1 is the classic high-number squat pattern, and the package's own index.js is empty — the only effect of installing gunzip-js is to pull attacker-controlled code from an unaudited external host into the installer's dependency graph.

Source: ossf-package-analysis (cb01fea066eb17256cd8a5ef589351ca7c5fda77eaff201237eac8f306b5b53d)

The OpenSSF Package Analysis project identified 'gunzip-js' @ 99.9.1 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.
Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-15T15:40:02.649685121Z",
            "sha256": "cb01fea066eb17256cd8a5ef589351ca7c5fda77eaff201237eac8f306b5b53d",
            "modified_time": "2026-08-15T15:31:09Z",
            "source": "ossf-package-analysis",
            "versions": [
                "99.9.1"
            ]
        },
        {
            "id": "IN-MAL-2026-017976",
            "import_time": "2026-08-15T18:45:40.469016922Z",
            "sha256": "d410844f9db44f33c2f674456c727d4c46402ad8f4de02a036fec3b099b2737b",
            "versions": [
                "99.9.1"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-15T18:11:37Z"
        }
    ]
}
References
Credits

Affected packages

npm / gunzip-js

Package

Name
gunzip-js
View open source insights on deps.dev
Purl
pkg:npm/gunzip-js

Affected ranges

Affected versions

99.*
99.9.1

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "package.json",
            "tlsh": "8be072208a206a334ec501b6482b616bf3b08e4f0408bc0c2adb082c818cab328fa25c",
            "sha256": "2e6f354e11291da90eca5d8d92908cece33865d1115368db76aa752d6fe09218"
        }
    ],
    "package_integrity": [
        {
            "filename": "gunzip-js-99.9.1.tgz",
            "hashes": {
                "sha1": "61534a161c9763cd95c3e6cbe438caf45e095fbd",
                "sha512_sri": "sha512-3u8A2GIRg1VLzd4Hj9FXNatFXNVYeS9usdvpIq/r/ELTgsBjWE5/eVzTcexmHWnN2kI6pcIMJ0lrLKpuiMADNg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/gunzip-js/MAL-2026-14056.json"