MAL-2026-10556

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@cw-ui/asio-neon-themes/MAL-2026-10556.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10556
Aliases
  • GHSA-4966-56x6-595h
Published
2026-07-14T05:12:39Z
Modified
2026-07-14T13:49:32Z
Summary
Malicious code in @cw-ui/asio-neon-themes (npm)
Details

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

Source: amazon-inspector (dcd2366d31cefc8f66861e0e65c782a88c46dc9232d11d463a9fa2869c73dcaa)

On npm install, postinstall.js reads os.hostname() and embeds it as a query parameter in a plain-HTTP GET to a bare IPv4 address (http://37.60.255.218/skybackground.png?display=). This transmits the installer's host identifier to attacker-controlled infrastructure under the cover of an 'image download.' The package metadata, README, and code disagree three ways: package.json declares scope @cw-ui/asio-neon-themes ('themes'), README claims 'Simple Text Utils' with capitalize/reverse/wordCount, and the actual shipped code is an image-fetcher beacon. The author field is the placeholder 'Your Name'. The fetch follows arbitrary 301/302 redirects and writes the response bytes to downloaded-image.jpg inside the package directory with no integrity check, enabling staged-payload delivery — the endpoint can return any bytes, and the redirect handler accepts any destination.

Source: ghsa-malware (68b3e84776090e3839851e3e7d6cd3ac1e42e6b55c5f9f222fd17e87612a20e5)

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": [
        {
            "id": "GHSA-4966-56x6-595h",
            "import_time": "2026-07-14T05:59:59.60467165Z",
            "modified_time": "2026-07-14T05:13:08Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "68b3e84776090e3839851e3e7d6cd3ac1e42e6b55c5f9f222fd17e87612a20e5",
            "source": "ghsa-malware"
        },
        {
            "id": "IN-MAL-2026-010489",
            "import_time": "2026-07-14T13:35:47.903254558Z",
            "modified_time": "2026-07-14T12:47:22Z",
            "sha256": "dcd2366d31cefc8f66861e0e65c782a88c46dc9232d11d463a9fa2869c73dcaa",
            "source": "amazon-inspector",
            "versions": [
                "2.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @cw-ui/asio-neon-themes

Package

Name
@cw-ui/asio-neon-themes
View open source insights on deps.dev
Purl
pkg:npm/%40cw-ui/asio-neon-themes

Affected ranges

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

Affected versions

2.*
2.0.0

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": "postinstall.js",
            "sha256": "a15f7319b6bef6ea33ad8ad401aaa5939576703b28f329fdb086b5a8b01d1868",
            "tlsh": "594165a919f341381233a0ea7e5b9d2af2538903314ccf0435cc95119fc2fb846aa3ae"
        },
        {
            "path": "package.json",
            "sha256": "4c514531993d0f7ad42bee65260cc45e0de531e169500cf8f4f44e933dde015e",
            "tlsh": "bae0682ec9206a6324cc5e947d5f2605f6990807125cbd0837eb016c4bad23f50bf7af"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@cw-ui/asio-neon-themes/MAL-2026-10556.json"