MAL-2026-13603
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (118252cd198a6c0e985917992969dbbaf8e9792ccbc27fab0ebbab191a1e6023)
On require of platform-ui-colors, both the declared main lib/telemetry.js and helpers.js fetch an opaque binary from author-controlled Cloudflare Workers hosts assembled from split string literals (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT fallback to *.dl.wel1.ru, write it to /tmp/.cache or %TEMP%\dotnet_diag_.exe, chmod 755 the file, and detached-spawn it via cp.spawn('/bin/sh', ['-c', filePath+' &'], {detached:true}). Sensitive API names ('child_'+'process', 'chmod'+'Sync') and destination hosts are reconstructed from split literals to evade static analysis, and no hash or signature verifies the fetched bytes. Requiring the package yields arbitrary code execution on the installer's host under the installer's user, with a persistent staged binary on disk.
- 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": "_helpers.js",
"sha256": "0121e830aa822c7257e9dafb2d116d8f05d5e948bc7e7b2750564be7736c0f0e",
"tlsh": "6fa1b65a26fa30180792e5d8891f5816719afa533385d8c4ff0c66945fd727883b29ec"
},
{
"path": "lib/telemetry.js",
"sha256": "fa261ee795326f5f8b726c79857f05a97a4a54b854841eee0026ef1803e77ede",
"tlsh": "c2733f4966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
}
],
"package_integrity": [
{
"filename": "platform-ui-colors-35.8.1.tgz",
"hashes": {
"sha1": "18dfb240a26fb985a797684c4383df28b8492356",
"sha512_sri": "sha512-ED39KI3b3yjqNemzyWtqigKsvSaxblWViX0sCKzNrU/E0qulm3U7q4jNfyKley4ugYvPX2BRg31BOifVCncvcQ=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "platform-ui-colors"
},
"versions": [
"35.8.1"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-017012",
"import_time": "2026-08-07T12:51:22.128613507Z",
"modified_time": "2026-08-07T12:31:00Z",
"sha256": "118252cd198a6c0e985917992969dbbaf8e9792ccbc27fab0ebbab191a1e6023",
"source": "amazon-inspector",
"versions": [
"35.8.1"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (118252cd198a6c0e985917992969dbbaf8e9792ccbc27fab0ebbab191a1e6023)\nOn require of platform-ui-colors, both the declared main lib/telemetry.js and _helpers.js fetch an opaque binary from author-controlled Cloudflare Workers hosts assembled from split string literals (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT fallback to *.dl.wel1.ru, write it to /tmp/.cache_\u003cuid\u003e or %TEMP%\\dotnet_diag_\u003cuid\u003e.exe, chmod 755 the file, and detached-spawn it via cp.spawn(\u0027/bin/sh\u0027, [\u0027-c\u0027, filePath+\u0027 \u0026\u0027], {detached:true}). Sensitive API names (\u0027child_\u0027+\u0027process\u0027, \u0027chmod\u0027+\u0027Sync\u0027) and destination hosts are reconstructed from split literals to evade static analysis, and no hash or signature verifies the fetched bytes. Requiring the package yields arbitrary code execution on the installer\u0027s host under the installer\u0027s user, with a persistent staged binary on disk.\n",
"id": "MAL-2026-13603",
"modified": "2026-08-07T12:31:00Z",
"published": "2026-08-07T12:31:00Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/platform-ui-colors/v/35.8.1"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in platform-ui-colors (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.