MAL-2026-6291
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (7241a2e167db383267fa82ce9660a44f7bcca4b6d4f11bb7ca85eaa6b432a47e)
package.json declares a postinstall script that runs automatically on npm install and performs require('https').get(...) to a Burp Collaborator subdomain (7rzjsf29azci2qjsm6kxt23ag1mtanyc.oastify.com), passing os.hostname() and os.userInfo().username as query parameters. Any developer or build system installing this package leaks host identity to an external attacker-controlled OAST endpoint. The package's own description (PENTEST-PoC: Dependency confusion - SecurifyAI engagement 2026-06-23) and the version 9.9.9 published under the @outmarket scope indicate the package is designed to win resolution against an internal private package of the same name and harvest beacons from anyone in the targeted organization who installs it.
- 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": "package.json",
"sha256": "f79b34aef25edb1847146983030a7f634d11cbcad642562ea4bc89b86c9f60d8",
"tlsh": "9de068f849fcf77238c408c954b22a0cb4b3d9255008ac04aae3228886941f75eb167a"
}
],
"package_integrity": [
{
"filename": "ui-9.9.9.tgz",
"hashes": {
"sha1": "4ee5f7f689d4bcc02eed83edb3a778f02bd336ae",
"sha512_sri": "sha512-cZrM6s3n5KxN3lF10sD/pQ0AhJ3lxvIotf6KXHUTdBY7Cd4ZUHzBg88jVpBX0mwAOrEZJN/CgX9kyI/mf+vsdQ=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "@outmarket/ui"
},
"versions": [
"9.9.9"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-007207",
"import_time": "2026-06-23T14:23:03.488562279Z",
"modified_time": "2026-06-23T14:12:09Z",
"sha256": "7241a2e167db383267fa82ce9660a44f7bcca4b6d4f11bb7ca85eaa6b432a47e",
"source": "amazon-inspector",
"versions": [
"9.9.9"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (7241a2e167db383267fa82ce9660a44f7bcca4b6d4f11bb7ca85eaa6b432a47e)\npackage.json declares a postinstall script that runs automatically on `npm install` and performs `require(\u0027https\u0027).get(...)` to a Burp Collaborator subdomain (`7rzjsf29azci2qjsm6kxt23ag1mtanyc.oastify.com`), passing `os.hostname()` and `os.userInfo().username` as query parameters. Any developer or build system installing this package leaks host identity to an external attacker-controlled OAST endpoint. The package\u0027s own description (`PENTEST-PoC: Dependency confusion - SecurifyAI engagement 2026-06-23`) and the version `9.9.9` published under the `@outmarket` scope indicate the package is designed to win resolution against an internal private package of the same name and harvest beacons from anyone in the targeted organization who installs it.\n",
"id": "MAL-2026-6291",
"modified": "2026-06-23T14:12:09Z",
"published": "2026-06-23T14:12:09Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/@outmarket/ui/v/9.9.9"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in @outmarket/ui (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.