MAL-2026-12743

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-react-utils/MAL-2026-12743.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12743
Aliases
  • GHSA-gmf6-p7rq-84hp
Published
2026-08-05T13:46:14Z
Modified
2026-08-06T01:20:34.028349457Z
Summary
Malicious code in devplatform-react-utils (npm)
Details

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

Source: amazon-inspector (15880efb2feec5e49ab725414e805293700e451ede11a2e4f3b1fe8e2f8f881c)

On require of the package, index.js loads helpers.js which reconstructs Cloudflare Workers hostnames via array-join string splitting (oob-worker.cf{99-9b3,101-adf,102-baf,103-070}.workers.dev), downloads a platform-specific binary, writes it to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnetdiag<hex>.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start. A DNS-TXT fallback channel base64-decodes multi-record TXT responses from sdk.dl.wel1.ru into the payload bytes. lib/telemetry.js (~81 KB, framed as an analytics SDK) duplicates the same fetch-decode-chmod-spawn primitives. Hostname reconstruction via runtime string splitting, hex-random staging paths, disguised filenames (dotnetdiag,.cache,.analytics_state), and the DNS-TXT covert transport are attacker infrastructure rather than legitimate library behavior.

Source: ghsa-malware (6580ac910eec3a2cb20ce2e935a39da2549948bc1c702be53f911dfbac8d06ba)

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": [
        {
            "source": "amazon-inspector",
            "sha256": "15880efb2feec5e49ab725414e805293700e451ede11a2e4f3b1fe8e2f8f881c",
            "versions": [
                "35.6.9"
            ],
            "import_time": "2026-08-05T14:19:54.57701388Z",
            "modified_time": "2026-08-05T13:46:14Z",
            "id": "IN-MAL-2026-015032"
        },
        {
            "import_time": "2026-08-06T00:58:53.376890849Z",
            "sha256": "6580ac910eec3a2cb20ce2e935a39da2549948bc1c702be53f911dfbac8d06ba",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "modified_time": "2026-08-05T15:02:34Z",
            "source": "ghsa-malware",
            "id": "GHSA-gmf6-p7rq-84hp"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-react-utils

Package

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

Affected ranges

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

Affected versions

35.*
35.6.9

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha1": "3534107c475d9165b92a27aa9ef7d684077912c1",
                "sha512_sri": "sha512-NckdAPC+Pn+EXzDubYCdM6eZ9zvdz4zjs8W1CeIFRcVbPmxH1Q6sBY00YIEvAPcMhDNyOXXGtIzPIyQt0R/mvQ=="
            },
            "filename": "devplatform-react-utils-35.6.9.tgz"
        }
    ],
    "evidence_files": [
        {
            "sha256": "5fba12e734f47a13f379ccb41745db54dedec6dadec438b063581f4f9db4726b",
            "path": "_helpers.js",
            "tlsh": "2ea1975b16aa70184bb1ebe4ca174415f65af663338082c4fb9c75d41fb352482b2efc"
        },
        {
            "sha256": "637c625a4c08a58d11466e6d0cb94343cec1058c83ed8dd48059cce8a74e948a",
            "path": "lib/telemetry.js",
            "tlsh": "fb835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-react-utils/MAL-2026-12743.json"