MAL-2026-12770

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-location/MAL-2026-12770.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12770
Aliases
  • GHSA-hg93-55cg-c2g7
Published
2026-08-05T13:43:06Z
Modified
2026-08-06T01:20:37.317511122Z
Summary
Malicious code in devplatform-spa-plugin-location (npm)
Details

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

Source: amazon-inspector (cb9472f7623159163739228ed6ec07beb8599d3867f7c5215e4bf0e4bbde5a78)

On require() of the package, index.js loads vendor.js, which selects a platform-specific payload URL by joining string fragments to reconstruct Cloudflare Worker hostnames (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS-TXT chunked base64 fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under disguised names (e.g. 'dotnetdiag_*.exe', '.cache_*'), chmod 0755, and executed detached via spawn('/bin/sh', ['-c', fp + ' &'], {detached:true}).unref() or spawn('cmd',...). Hostname fragments are array-joined at runtime and a helper suppresses console output, deliberately evading static inspection. The package name resembles a legitimate SPA plugin but the shipped _vendor.js is a dropper granting arbitrary remote code execution on any host that imports the module.

Source: ghsa-malware (efc283f86f94400db2d3b8e9aea0b1c936d347f16a36df77dde30b00eb2c7980)

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": [
        {
            "versions": [
                "35.9.2"
            ],
            "id": "IN-MAL-2026-015011",
            "import_time": "2026-08-05T14:19:52.433448799Z",
            "modified_time": "2026-08-05T13:43:06Z",
            "source": "amazon-inspector",
            "sha256": "cb9472f7623159163739228ed6ec07beb8599d3867f7c5215e4bf0e4bbde5a78"
        },
        {
            "modified_time": "2026-08-05T17:35:51Z",
            "id": "GHSA-hg93-55cg-c2g7",
            "import_time": "2026-08-06T00:58:53.389361732Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "ghsa-malware",
            "sha256": "efc283f86f94400db2d3b8e9aea0b1c936d347f16a36df77dde30b00eb2c7980"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-spa-plugin-location

Package

Name
devplatform-spa-plugin-location
View open source insights on deps.dev
Purl
pkg:npm/devplatform-spa-plugin-location

Affected ranges

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

Affected versions

35.*
35.9.2

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-uTMBGetznW2mj/2rhUOYVmfHhLtOO5KjkCrlYfCGqV60tJt2Ga419kp2uNP16dx3UYXBeAJU9S+V8wvD2LDlGQ==",
                "sha1": "2fd63b1f36813fe1069016000a99ebc9ee310e5a"
            },
            "filename": "devplatform-spa-plugin-location-35.9.2.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_vendor.js",
            "tlsh": "2ba1c89516a670194bb0abe4c71b4429f65be7633280c294ff5ca9941f7612483b2efc",
            "sha256": "6fa58ed846381d979b7f8668dcc38c190ca91726624953450b695ca2929443ec"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-location/MAL-2026-12770.json"