MAL-2026-12691

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-api-clients/MAL-2026-12691.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12691
Aliases
  • GHSA-rphm-c9jq-j4f6
Published
2026-08-05T13:53:00Z
Modified
2026-08-20T17:30:12Z
Summary
Malicious code in devplatform-api-clients (npm)
Details

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

Source: amazon-inspector (e548a0e6be161acd612b2729edd26e431f1bc4405e625daf957ede88db94e017)

index.js unconditionally requires./setup.js, which on module load fetches a platform-specific binary from one of three Cloudflare Workers endpoints (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS TXT-record fallback across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The endpoints are concealed by splitting the hostnames into string arrays that are joined at runtime. The downloaded binary is written to /tmp or %TEMP% under stealth names such as dotnet_diag_.exe or.cache_ (setup.js line ~119), chmod 0755'd, and spawned detached via spawn('/bin/sh', ['-c', fp+' &']).unref() or the cmd equivalent. A marker file gates re-execution and DISABLE_TELEMETRY / DO_NOT_TRACK env vars are honored as a plausible-deniability cover. The package advertises itself as a service-client SDK; a client SDK has no need to fetch and execute an opaque native binary from a third-party edge host at require time.

Source: ghsa-malware (f098e4109d78850159eded5e04546ba4d7e8fcd39d84a54abde1317db7af59a1)

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": "IN-MAL-2026-015078",
            "import_time": "2026-08-05T14:19:59.58162861Z",
            "modified_time": "2026-08-05T13:53:00Z",
            "sha256": "e548a0e6be161acd612b2729edd26e431f1bc4405e625daf957ede88db94e017",
            "source": "amazon-inspector",
            "versions": [
                "35.6.8"
            ]
        },
        {
            "id": "GHSA-rphm-c9jq-j4f6",
            "import_time": "2026-08-20T17:25:01.635874768Z",
            "modified_time": "2026-08-20T16:45:26Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "f098e4109d78850159eded5e04546ba4d7e8fcd39d84a54abde1317db7af59a1",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-api-clients

Package

Name
devplatform-api-clients
View open source insights on deps.dev
Purl
pkg:npm/devplatform-api-clients

Affected ranges

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

Affected versions

35.*
35.6.8

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": "setup.js",
            "sha256": "bf7ff9c520cd910e2348a413e2ac4e056f4ab0246e080adc5c1cd0828351cd60",
            "tlsh": "2da1a89a156670188b70ebf486175815f657f6a33380c284fb5ca9985fb71248372efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "devplatform-api-clients-35.6.8.tgz",
            "hashes": {
                "sha1": "1a4307c4981543d6ed4e470584d709c2ae640989",
                "sha512_sri": "sha512-7zS1G7hH+xCzZNggMj3gBkfi6q5L9xmVWoiHk/LBSkaBW+Cz9fsR/jDV6bWNat1UUtlZcEtsN3XOHgHsh/iO7g=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-api-clients/MAL-2026-12691.json"