MAL-2026-17491

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/focus-visible-polyfill-lite/MAL-2026-17491.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17491
Published
2026-10-04T23:12:40Z
Modified
2026-10-04T23:30:06Z
Summary
Malicious code in focus-visible-polyfill-lite (npm)
Details

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

Source: amazon-inspector (5225b5a8636a589f9b90272ad04c3f4104670a23d5c24b45f6aeaa757a4f2a2b)

The package is advertised as a focus-visible polyfill but ships thunderboltRegistry.js, which impersonates Wix thunderbolt internal registry modules (thunderboltRegistry, siteAssetsRegistry, documentManagementRegistry, editorRegistry, corvidRegistry, and others) via a Proxy-backed export stub. When the module is required, an IIFE at the top of the file uses child_process.execSync to run host reconnaissance commands (id, whoami, uname -a, ifconfig/ip addr, cat /etc/hosts) and sends the command output along with a beacon (Node version, platform, pid) via plain-HTTP GET requests to a hardcoded attacker-controlled endpoint at http://dxpoc.gt.tc/callback.php/ef9ea0e191006f3cc6670720c99c26f3. The package self-labels the beacon as 'rce-poc'. The shape is a dependency-confusion / typosquat payload: a benign-sounding public package shadows Wix-internal registry names so that a build pipeline resolving these names from the public registry executes the reconnaissance payload with the installer's privileges on module load.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020876",
            "import_time":  "2026-10-04T23:16:29.879942944Z",
            "modified_time":  "2026-10-04T23:12:40Z",
            "sha256":  "5225b5a8636a589f9b90272ad04c3f4104670a23d5c24b45f6aeaa757a4f2a2b",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / focus-visible-polyfill-lite

Package

Name
focus-visible-polyfill-lite
View open source insights on deps.dev
Purl
pkg:npm/focus-visible-polyfill-lite

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "thunderboltRegistry.js",
            "sha256":  "6717f66b7a71af1398876cee877318cb0f0107aa71e51e76c8e81a8f1d152925",
            "tlsh":  "107164a5f99df02065c33438cb7f404ab4bb85672d6caee0744899b02f7985c01be6f5"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "focus-visible-polyfill-lite-1.0.0.tgz",
            "hashes":  {
                "sha1":  "c444521a9daa2d9260427af4e52bfe159f669386",
                "sha512_sri":  "sha512-BcVlNNWYCVC26MzU2V/XYrwQtes87qu3u/O45LhlFjnHXtrwa2zO4lgej64awQigKth/Qd0Kr9b44yzYY+wLhg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/focus-visible-polyfill-lite/MAL-2026-17491.json"