MAL-2026-16277
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (0174148efc99cd1130b3b9f2c57599aac0f80ead454fd7dc0f397386db891b0c)
The package ships console.js, which when loaded in a browser on any host matching duel.com fetches https://unpkg.com/x6842179305@1.0.3/1.js and https://unpkg.com/x6842179305@1.0.3/ui.js and executes both via (0, eval)(...). On other hosts it redirects the page to duel.com. The declared main/unpkg entry 1.js is a ~740KB single-line Function("ZU7mhwD", "...") loader built from hex-escaped char arrays and a rotor-style decoder, with no readable source. Package metadata is placeholder-quality (name xa424234657567, no README, no repository), inconsistent with a library and consistent with a payload-delivery artifact. Consuming this package on a page served under duel.com results in remote, mutable, attacker-controlled code executing in the page context.
- 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": "console.js",
"sha256": "66d05811bcf8563435c2a13e9dd485c13bb69a6361be4ec553ecac8aed6842f7",
"tlsh": "efe061f701b954414367555dc20ffd3ba017050a19c8ee66f5f423805f4706f81e28d8"
},
{
"path": "1.js",
"sha256": "32526067b6d87a46985c3c2003846ec87ec6ef59a71fffe7616f320639500964",
"tlsh": "4ff4f9ae13e974aac3bf6dc14c37bc9c907909522f5638dafe03d047ed4c1d125a4a6a"
}
],
"package_integrity": [
{
"filename": "xa424234657567-1.0.0.tgz",
"hashes": {
"sha1": "c9e4e69cc5d938e2b7ebbd9c398578daceced2bc",
"sha512_sri": "sha512-COOvtg8L+7+aLAJQO1iE1ZtAFFPJSC/LbiS6z9u/uggkWUMuZdFkK2YCL416u8ChDI6LVVfwyXZMbwnPORnMOg=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "xa424234657567"
},
"versions": [
"1.0.0"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-020175",
"import_time": "2026-09-18T03:21:13.036394428Z",
"modified_time": "2026-09-18T02:56:09Z",
"sha256": "0174148efc99cd1130b3b9f2c57599aac0f80ead454fd7dc0f397386db891b0c",
"source": "amazon-inspector",
"versions": [
"1.0.0"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (0174148efc99cd1130b3b9f2c57599aac0f80ead454fd7dc0f397386db891b0c)\nThe package ships console.js, which when loaded in a browser on any host matching duel.com fetches https://unpkg.com/x6842179305@1.0.3/1.js and https://unpkg.com/x6842179305@1.0.3/ui.js and executes both via (0, eval)(...). On other hosts it redirects the page to duel.com. The declared main/unpkg entry 1.js is a ~740KB single-line Function(\"ZU7mhwD\", \"...\") loader built from hex-escaped char arrays and a rotor-style decoder, with no readable source. Package metadata is placeholder-quality (name xa424234657567, no README, no repository), inconsistent with a library and consistent with a payload-delivery artifact. Consuming this package on a page served under duel.com results in remote, mutable, attacker-controlled code executing in the page context.\n",
"id": "MAL-2026-16277",
"modified": "2026-09-18T02:56:09Z",
"published": "2026-09-18T02:56:09Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/xa424234657567/v/1.0.0"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in xa424234657567 (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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.