MAL-2026-13179

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-react-version-switch/MAL-2026-13179.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13179
Published
2026-08-05T15:11:54Z
Modified
2026-08-05T15:53:00Z
Summary
Malicious code in dolyame-ui-react-version-switch (npm)
Details

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

Source: amazon-inspector (1ee4e207fd01bae956d7fe084377ecea438f81774ea01ca6b02a50c1962c6cca)

Package advertises itself as a React UI helper but its index.js unconditionally require()s./vendor at load time. vendor.js selects a platform-specific asset path, fetches bytes over HTTPS from a randomly-ordered pool of string-split-obfuscated hosts assembled via.join('') (oob-worker.cf*.workers.dev and sdk/ext/pkg/net.dl.wel1.ru), with a DNS-TXT chunked-base64 fallback to bypass HTTPS filtering. The downloaded bytes are written to /tmp or %TEMP% under disguised names such as dotnet_diag.exe or.cache, chmod 0755'd on POSIX, and spawned detached via /bin/sh or cmd.exe. No hash verification is performed despite a cover-story comment claiming a SHA-256 integrity check. The package's declared 'interface elements' purpose is a cover story: index.js is a trivial no-op class stub, and the dropper is the only functional behavior.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-015604",
            "import_time":  "2026-08-05T15:19:59.942523668Z",
            "modified_time":  "2026-08-05T15:11:54Z",
            "sha256":  "1ee4e207fd01bae956d7fe084377ecea438f81774ea01ca6b02a50c1962c6cca",
            "source":  "amazon-inspector",
            "versions":  [
                "35.6.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-react-version-switch

Package

Name
dolyame-ui-react-version-switch
View open source insights on deps.dev
Purl
pkg:npm/dolyame-ui-react-version-switch

Affected ranges

Affected versions

35.*
35.6.1

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":  "_vendor.js",
            "sha256":  "8055a93e18a4d8a7e49dab9b5df62526cc69c80fc79e00c0f3c6a2e7af29a9fc",
            "tlsh":  "7ab1a85a16aa71094bb0abe4c7174415f65ff6633381c198fb9c69981f7212483f2efc"
        },
        {
            "path":  "index.js",
            "sha256":  "2ce23f4adf54a4693a4be8e02ac1edd1e2278e2298e05726f0b2d2e57e0d3fb8",
            "tlsh":  "e6f04c9520dba42386b177e2ca720052f66387350a4f01a87ed940fe0ff0c584298fbe"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "dolyame-ui-react-version-switch-35.6.1.tgz",
            "hashes":  {
                "sha1":  "b4375a75689a4b7af88b661ebf565840d28ff056",
                "sha512_sri":  "sha512-Qss/q/dhQbnVUyM38X3cr2+rgWhwBtQ08P292lFAPoPLh1S6AC5jPzxNxe52+mafopL5ruAkdjasSE+20mmhKQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-react-version-switch/MAL-2026-13179.json"