MAL-2026-14440

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/web-advertising/MAL-2026-14440.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-14440
Published
2026-08-24T16:38:53Z
Modified
2026-08-24T17:00:14Z
Summary
Malicious code in web-advertising (npm)
Details

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

Source: amazon-inspector (bc7c0c1f060691740d5149c61d74f3ddd8f6e10107c7621d700ae0819a1e2237)

web-advertising@999.9.16 declares scripts.preinstall = 'node index.js', so index.js executes automatically on npm install. The script collects hostname, username, home directory, local/public/resolver IP addresses, CI environment identifiers (GITHUB_REPOSITORY, GITHUB_ACTOR, CI_PROJECT_PATH, AWS_REGION), the parent project's package.json name/author/repo, and authenticated developer identities obtained by shelling out to gh api user --jq.login, npm whoami, and git config user.email. The collected JSON is hex-encoded, split into 60-character chunks, and exfiltrated via DNS subdomain queries to da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.fun and via HTTPS/HTTP POST to the same callback host. The package name plus 999.9.16 versioning and the OAST callback are consistent with a dependency-confusion beacon. The README's self-description as authorised research does not change the observed behavior: installer host, CI, and identity data leave the machine to an author-controlled third-party callback with no installer consent, and DNS tunneling is used to bypass egress filtering.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-018628",
            "import_time": "2026-08-24T16:49:13.383451693Z",
            "modified_time": "2026-08-24T16:38:53Z",
            "sha256": "a6fb813ae0ff5bda702a6717b2f648ce16b4603550a9c5b864536f775eaf337c",
            "source": "amazon-inspector",
            "versions": [
                "999.9.15"
            ]
        },
        {
            "id": "IN-MAL-2026-018629",
            "import_time": "2026-08-24T16:49:13.453367787Z",
            "modified_time": "2026-08-24T16:39:05Z",
            "sha256": "bc7c0c1f060691740d5149c61d74f3ddd8f6e10107c7621d700ae0819a1e2237",
            "source": "amazon-inspector",
            "versions": [
                "999.9.16"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / web-advertising

Package

Name
web-advertising
View open source insights on deps.dev
Purl
pkg:npm/web-advertising

Affected ranges

Affected versions

999.*
999.9.15
999.9.16

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": "index.js",
            "sha256": "d26774748999a254603092ac1cea09aa31719ebad5fbc3be89f9224e8f2d5abd",
            "tlsh": "ec12c75702f6243013e165682e8784c4776bd517378aebf0b94d47601fee26843b37ea"
        }
    ],
    "package_integrity": [
        {
            "filename": "web-advertising-999.9.15.tgz",
            "hashes": {
                "sha1": "ed259c8c7f43e884f9369cbf391ca23199690d5d",
                "sha512_sri": "sha512-tgwDx8ibZ4C0BrevP5hZck9MYBfFpW16IYFfKmAQnAVKgu7yDJgHySnzp59/oGbXHUEt1dcQno4zUK9//IQBCA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/web-advertising/MAL-2026-14440.json"