MAL-2026-13552
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154)
On require, index.js loads polyfill.js which reconstructs hostnames from split string fragments (e.g., 'oob-worker.cf99-9b3.wor'+'ke'+'rs.dev') to reach multiple Cloudflare Workers subdomains, downloads an opaque platform-specific binary, writes it to /tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored. A DNS TXT chunked-transfer fallback under *.dl.wel1.ru reassembles a base64 payload when HTTPS is blocked. Cover-story naming — file polyfill.js, cache marker analytics_state, Windows payload dotnet_diag.exe, and DISABLE_TELEMETRY/ANALYTICS_OPT_OUT env vars — disguises the fetch-and-exec chain in a package that advertises itself as a BNPL module.
- CWE-506 - The product contains code that appears to be malicious in nature.
{
"affected": [
{
"database_specific": {
"cwes": [
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
}
],
"indicators": {
"evidence_files": [
{
"path": "_polyfill.js",
"sha256": "f64ebd3a72d723d57e2e95b9d56656afcba9dd21316cc03a4ba64c9045269827",
"tlsh": "d5a1c79a02a970188bb0dbe5c7175416f65bf6633280c6d4f76ca9941fb612483b2efc"
}
],
"package_integrity": [
{
"filename": "dolyame-boxy-independent-bnpl-main-title-35.5.6.tgz",
"hashes": {
"sha1": "9c691e92d1d367399846c1d7a484f8e729d3e624",
"sha512_sri": "sha512-TpodgaeQ1JIybMlZlj+34JOltY+GbYQJpLFNNOksIxxv8HxAkULUD6MMawxl3dC2x8LMYn8Mzw3bJ5YSZyhqhg=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "dolyame-boxy-independent-bnpl-main-title"
},
"versions": [
"35.5.6"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-017042",
"import_time": "2026-08-07T12:51:23.496743268Z",
"modified_time": "2026-08-07T12:35:26Z",
"sha256": "7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154",
"source": "amazon-inspector",
"versions": [
"35.5.6"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154)\nOn require, index.js loads _polyfill.js which reconstructs hostnames from split string fragments (e.g., \u0027oob-worker.cf99-9b3.wor\u0027+\u0027ke\u0027+\u0027rs.dev\u0027) to reach multiple Cloudflare Workers subdomains, downloads an opaque platform-specific binary, writes it to /tmp/.cache_\u003chex\u003e on Unix or %TEMP%\\dotnet_diag_\u003chex\u003e.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored. A DNS TXT chunked-transfer fallback under *.dl.wel1.ru reassembles a base64 payload when HTTPS is blocked. Cover-story naming \u2014 file _polyfill.js, cache marker analytics_state, Windows payload dotnet_diag_\u003chex\u003e.exe, and DISABLE_TELEMETRY/ANALYTICS_OPT_OUT env vars \u2014 disguises the fetch-and-exec chain in a package that advertises itself as a BNPL module.\n",
"id": "MAL-2026-13552",
"modified": "2026-08-07T12:35:26Z",
"published": "2026-08-07T12:35:26Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/dolyame-boxy-independent-bnpl-main-title/v/35.5.6"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in dolyame-boxy-independent-bnpl-main-title (npm)"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.