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
Aliases
  • GHSA-2hqf-5jxh-4wp2
Published
2026-08-15T15:31:09Z
Modified
2026-08-18T17:15:25Z
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: ghsa-malware (9c6e55e77d4b3cbb1fefb101880e5e01540189c921ca9ef6432781d2807e71ea)

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 (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",
            "modified_time": "2026-08-15T15:31:09Z",
            "sha256": "cb01fea066eb17256cd8a5ef589351ca7c5fda77eaff201237eac8f306b5b53d",
            "source": "ossf-package-analysis",
            "versions": [
                "99.9.1"
            ]
        },
        {
            "id": "IN-MAL-2026-017976",
            "import_time": "2026-08-15T18:45:40.469016922Z",
            "modified_time": "2026-08-15T18:11:37Z",
            "sha256": "d410844f9db44f33c2f674456c727d4c46402ad8f4de02a036fec3b099b2737b",
            "source": "amazon-inspector",
            "versions": [
                "99.9.1"
            ]
        },
        {
            "id": "GHSA-2hqf-5jxh-4wp2",
            "import_time": "2026-08-18T16:29:04.445778968Z",
            "modified_time": "2026-08-18T16:20:52Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "9c6e55e77d4b3cbb1fefb101880e5e01540189c921ca9ef6432781d2807e71ea",
            "source": "ghsa-malware"
        }
    ]
}
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

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

Affected versions

99.*
99.9.1

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": "package.json",
            "sha256": "2e6f354e11291da90eca5d8d92908cece33865d1115368db76aa752d6fe09218",
            "tlsh": "8be072208a206a334ec501b6482b616bf3b08e4f0408bc0c2adb082c818cab328fa25c"
        }
    ],
    "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"