MAL-2026-6480

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/gx-npm-lib/MAL-2026-6480.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6480
Aliases
  • GHSA-wcmr-4783-pq3p
Published
2026-06-25T22:30:08Z
Modified
2026-06-29T03:31:43.803220684Z
Summary
Malicious code in gx-npm-lib (npm)
Details

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

Source: amazon-inspector (e919710d2f28ec776b8165821ebe2fbe480c1e432ec9416c7b73bd1315ee6a6e)

Package published at version 99.99.99 under a generic name (gx-npm-lib) — the canonical dependency-confusion shape used to overshadow internal packages in CI version resolution. The postinstall lifecycle script runs node beacon.js, which collects installer metadata (package name, os.hostname(), os.userInfo() username, process.cwd(), the names of process.env variables, and Node version) and exfiltrates it via two channels to the hardcoded attacker-controlled OAST domain d8uectoqtvskhftsa940pm3kth3ahdxn4.oast.me: (1) a DNS lookup encoding pkg.host.user as subdomains, and (2) a base64-encoded HTTPS GET to https://d8uectoqtvskhftsa940pm3kth3ahdxn4.oast.me/<pkg>?d=<base64>. The package self-describes as a 'security-research placeholder' for a dependency-confusion PoC, but that self-label does not constitute installer consent — npm install in any environment where this package resolves (CI for an internal gx-npm-lib, or a developer mistyping) leaks host/user/cwd/environment inventory to the attacker's OAST collector. Multi-channel (DNS + HTTPS+base64) exfiltration to a hardcoded interactsh-style domain on a default install is a textbook active supply-chain attack.

Source: ghsa-malware (de1b5709aec5da1ffdf3a44dcb78b36dc7aa0d65aa499feca4d6f07dd0ae6011)

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": [
        {
            "versions": [
                "99.99.99"
            ],
            "sha256": "e919710d2f28ec776b8165821ebe2fbe480c1e432ec9416c7b73bd1315ee6a6e",
            "import_time": "2026-06-25T23:00:34.6160742Z",
            "modified_time": "2026-06-25T22:30:08Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-007560"
        },
        {
            "id": "GHSA-wcmr-4783-pq3p",
            "sha256": "de1b5709aec5da1ffdf3a44dcb78b36dc7aa0d65aa499feca4d6f07dd0ae6011",
            "modified_time": "2026-06-29T03:16:03Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "ghsa-malware",
            "import_time": "2026-06-29T03:26:14.37938462Z"
        }
    ]
}
References
Credits

Affected packages

npm / gx-npm-lib

Package

Name
gx-npm-lib
View open source insights on deps.dev
Purl
pkg:npm/gx-npm-lib

Affected ranges

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

Affected versions

99.*
99.99.99

Database specific

cwes 
[
    {
        "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",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "gx-npm-lib-99.99.99.tgz",
            "hashes": {
                "sha1": "f52f2ff07b0692fa4ad23c7182a3a3df03ff14b6",
                "sha512_sri": "sha512-pkF9XgdUnVdjNYbsn2ffbnywa+bABrrlHzqlECQFG/xcTDJhKTotDc+7nDApaa8xBBhWAeFyWQ48Mq+ZU29WFQ=="
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "2841879f99e8a12822f721f446af402526b3d2631358ddd0745ca3158f75db803d6cfe",
            "sha256": "8642a1b9117942eed77327a315389d97f652317c03f2506a9ee28793621af7b5",
            "path": "beacon.js"
        },
        {
            "tlsh": "92f0ac48f4146e7665e655e2183970c237314c4b9b10a949b69f80086b1dee703fb1aa",
            "sha256": "f43dd7e027aca56b2f5dd3547f6f38df2e417061bdba6530ee0d848234f266fa",
            "path": "package.json"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/gx-npm-lib/MAL-2026-6480.json"