MAL-2026-12754

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa/MAL-2026-12754.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12754
Aliases
  • GHSA-544p-6vr9-4r6g
Published
2026-08-05T13:44:30Z
Modified
2026-08-26T01:18:19Z
Summary
Malicious code in devplatform-spa (npm)
Details

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

Source: amazon-inspector (297ea05a85bad5f3af2ead77745d792c055efc94b9b58726fe3ee499821c745c)

On require('devplatform-spa'), index.js loads loader.js which downloads an OS-specific binary from Cloudflare Workers endpoints whose hostnames are assembled via string-array joins (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS TXT-record fallback channel across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The downloaded bytes are written to /var/tmp or %TEMP% under disguised names (.cache on Unix, dotnet_diag_.exe on Windows), chmod 0755'd, and spawned detached via /bin/sh -c or cmd.exe in _loader.js line 121-127. The loader is invoked unconditionally from index.js via try{require('./_loader')}catch{}, so the drop-and-execute runs on every require. Cover-story elements include a.analytics_state file, a no-op _l logging stub, and DISABLE_TELEMETRY/DO_NOT_TRACK opt-out checks that masquerade the behavior as telemetry.

Source: ghsa-malware (f7e55cd6ced17b6d3409f5b884b6d0489c7377ff584d00bfa14b1ce4b0b437c3)

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-2026-015020",
            "import_time": "2026-08-05T14:19:53.318145714Z",
            "modified_time": "2026-08-05T13:44:30Z",
            "sha256": "297ea05a85bad5f3af2ead77745d792c055efc94b9b58726fe3ee499821c745c",
            "source": "amazon-inspector",
            "versions": [
                "35.1.4"
            ]
        },
        {
            "id": "GHSA-544p-6vr9-4r6g",
            "import_time": "2026-08-25T16:26:05.005431117Z",
            "modified_time": "2026-08-25T15:57:26Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "f7e55cd6ced17b6d3409f5b884b6d0489c7377ff584d00bfa14b1ce4b0b437c3",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-spa

Package

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

Affected ranges

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

Affected versions

35.*
35.1.4

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": "_loader.js",
            "sha256": "138346be170dfe4adaf62be2bfd85fedd9e0d88a7a18bccc5c885407d2d6965c",
            "tlsh": "3fa1a85b16a670188bb0dbe4c71b541af65be2633380c284fb5c65981f7316483b2efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "devplatform-spa-35.1.4.tgz",
            "hashes": {
                "sha1": "b3ca42f5835a1cd01f5ccb85fc6e6fb9200f6020",
                "sha512_sri": "sha512-lVU9271CrG139Wv5KrZivBv/lnZ+X6KSUsJyUswH/vMjh23fQVTAmwZX0x1x7FJCDHiLTWn0JkNLIQqbkziynA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa/MAL-2026-12754.json"