MAL-2026-12187

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pfp-forms-sme-registration-ooo/MAL-2026-12187.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12187
Aliases
  • GHSA-x7rm-45xj-895w
Published
2026-08-05T08:50:40Z
Modified
2026-08-06T01:21:09.630018760Z
Summary
Malicious code in pfp-forms-sme-registration-ooo (npm)
Details

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

Source: amazon-inspector (d5effe78e8e38101fc7180664c8937bf9951a4c36f65c3e213b53ade88b3a648)

On require of pfp-forms-sme-registration-ooo, index.js loads polyfill.js which selects a platform-specific asset path and fetches a native binary over HTTPS from Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev) and *.dl.well1.site subdomains (tin, tina, ldr, win). The destination hostnames are reconstructed at runtime by joining split string arrays to evade static inspection, and a DNS-TXT chunked fallback channel is present. The fetched bytes are written to disguised paths (/var/tmp/.cache<hex> on POSIX, %TEMP%/dotnetdiag<hex>.exe on Windows), made executable via fs.chmodSync(outPath, 0o755), and spawned detached through /bin/sh -c or cmd.exe /c start /b. The binary is unpinned and unverified (no hash or signature check), the package's advertised purpose does not require a native helper, and the opt-out relies on generic environment variable names. Installing or importing this package results in arbitrary attacker-controlled code executing on the installer's host.

Source: ghsa-malware (335ca41080f57c8c7e77731f7036be7576767db54ca0f30ab733cd264dd0afee)

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": [
        {
            "import_time": "2026-08-05T09:28:11.126889735Z",
            "sha256": "d5effe78e8e38101fc7180664c8937bf9951a4c36f65c3e213b53ade88b3a648",
            "modified_time": "2026-08-05T08:50:40Z",
            "id": "IN-MAL-2026-014439",
            "versions": [
                "20.2.1"
            ],
            "source": "amazon-inspector"
        },
        {
            "import_time": "2026-08-06T00:58:53.479640007Z",
            "sha256": "335ca41080f57c8c7e77731f7036be7576767db54ca0f30ab733cd264dd0afee",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-x7rm-45xj-895w",
            "modified_time": "2026-08-05T18:35:04Z",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / pfp-forms-sme-registration-ooo

Package

Name
pfp-forms-sme-registration-ooo
View open source insights on deps.dev
Purl
pkg:npm/pfp-forms-sme-registration-ooo

Affected ranges

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

Affected versions

20.*
20.2.1

Database specific

cwes
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
indicators
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-QzsLsQEkCEhUBm6W6oybWzrZaNhVbQNuMd9djuNtmCRawGqAobBzHb68NvLI4w0ge5oOeaYHe7XsKounS+wWQw==",
                "sha1": "205ad4b803fa194b5fb7c63d50caa1b825eaf29b"
            },
            "filename": "pfp-forms-sme-registration-ooo-20.2.1.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_polyfill.js",
            "sha256": "547cec791269495caa3b173cf1a3d827b51e8958370797b548175799e3643abb",
            "tlsh": "37a1976a11a5701d4bb0d7e4c717541af65bf263738082d4fb9ca5885fb262483b2efc"
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pfp-forms-sme-registration-ooo/MAL-2026-12187.json"