mal-2026-16176
Vulnerability from ossf_malicious_packages
Published
2026-09-15 15:55
Modified
2026-09-16 06:57
Summary
Malicious code in fulfillment-cuprum-auth-widget (npm)
Details
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (06df6767178d76043d26df04fcbe4e8de2f579d38e96f52a04346c04a6dda565)
The package's preinstall script (index.js) runs automatically on npm install and collects host identifiers via os.hostname(), os.userInfo(), os.homedir(), and DNS lookups, then JSON-stringifies the entire process.env and POSTs both payloads to a hardcoded external host at https://l2ha5tswnm71286wnjgrngvb4tyejmdpe.i.dr0gas.com/exf. Bulk process.env serialization on developer and CI machines captures whatever secrets are present in the environment (cloud credentials, registry tokens, CI secrets). The destination domain is unrelated to any legitimate npm publisher and follows a dependency-confusion exfiltration pattern (long random subdomain under an attacker-controlled apex).
CWE
- CWE-506 - The product contains code that appears to be malicious in nature.
- CWE-506 - The product contains code that appears to be malicious in nature.
- CWE-506 - The product contains code that appears to be malicious in nature.
- CWE-506 - The product contains code that appears to be malicious in nature.
Credits
{
"affected": [
{
"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"
},
{
"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": "index.js",
"sha256": "6686205b181b18a3839a1d52ee768f85d0f80d4af5aa1981d4db7a58f3c9e3e3",
"tlsh": "5e4194c848f222340e7f64d8a69ea409565ade27b80ddcd4fa5e47c05fc97bc1531af2"
}
],
"package_integrity": [
{
"filename": "fulfillment-cuprum-auth-widget-3.7.2.tgz",
"hashes": {
"sha1": "393d78ce93eed51395e73d1a98a7f667d44d7db2",
"sha512_sri": "sha512-2ryJAYqVfg6Mj8fJ+9V/oWbzXYtTUpgJMD4tInJsU9mgmGScdyL4v3ZyRSL4KOIC6uQ+5BFzrXtlOTGco91VqA=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "fulfillment-cuprum-auth-widget"
},
"versions": [
"3.7.2",
"3.7.0-rc-37",
"1.0.0",
"3.7.1"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-020065",
"import_time": "2026-09-15T16:19:15.821215217Z",
"modified_time": "2026-09-15T15:55:36Z",
"sha256": "06df6767178d76043d26df04fcbe4e8de2f579d38e96f52a04346c04a6dda565",
"source": "amazon-inspector",
"versions": [
"3.7.2"
]
},
{
"id": "IN-MAL-2026-020088",
"import_time": "2026-09-16T06:56:09.070073475Z",
"modified_time": "2026-09-16T06:35:52Z",
"sha256": "1213ffcdb8b54ee283f605c54f2ab47ec6745958beb27238266a34d750c01235",
"source": "amazon-inspector",
"versions": [
"3.7.0-rc-37"
]
},
{
"id": "IN-MAL-2026-020089",
"import_time": "2026-09-16T06:56:09.173232842Z",
"modified_time": "2026-09-16T06:36:02Z",
"sha256": "6676be0124f0f93ae9cf314474613c050a29883a29273abbb07cf5a32032d796",
"source": "amazon-inspector",
"versions": [
"1.0.0"
]
},
{
"id": "IN-MAL-2026-020087",
"import_time": "2026-09-16T06:56:08.942522059Z",
"modified_time": "2026-09-16T06:35:45Z",
"sha256": "b61fddf30034bceba83cfa5a3cbded5cdeae958025eaf55b5086c01c94244d9c",
"source": "amazon-inspector",
"versions": [
"3.7.1"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (06df6767178d76043d26df04fcbe4e8de2f579d38e96f52a04346c04a6dda565)\nThe package\u0027s preinstall script (index.js) runs automatically on npm install and collects host identifiers via os.hostname(), os.userInfo(), os.homedir(), and DNS lookups, then JSON-stringifies the entire process.env and POSTs both payloads to a hardcoded external host at https://l2ha5tswnm71286wnjgrngvb4tyejmdpe.i.dr0gas.com/exf. Bulk process.env serialization on developer and CI machines captures whatever secrets are present in the environment (cloud credentials, registry tokens, CI secrets). The destination domain is unrelated to any legitimate npm publisher and follows a dependency-confusion exfiltration pattern (long random subdomain under an attacker-controlled apex).\n",
"id": "MAL-2026-16176",
"modified": "2026-09-16T06:57:58.237596317Z",
"published": "2026-09-15T15:55:36Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/fulfillment-cuprum-auth-widget/v/3.7.2"
},
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/fulfillment-cuprum-auth-widget/v/3.7.0-rc-37"
},
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/fulfillment-cuprum-auth-widget/v/1.0.0"
},
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/fulfillment-cuprum-auth-widget/v/3.7.1"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in fulfillment-cuprum-auth-widget (npm)"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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.
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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.
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