mal-2026-13646
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (85709f3e95d677177f1e55976d46cf4e16582e9cf3c1b310a7e67dd09885a743)
On require() of the package, index.js loads bridge.js which assembles Cloudflare Workers subdomain hostnames from split string fragments (oob-worker.cf103-070.workers.dev, cf100-416, cf101-adf.workers.dev) and downloads a platform-specific binary via https.get. The fetched bytes are written to a decoy path under /tmp or %TEMP% (.cache/dotnet_diag_.exe), chmod 0755 on Unix, and executed detached via spawn("/bin/sh",["-c", fp+" &"]) or spawn("cmd",...) on Windows. A DNS-TXT fallback channel resolves shards from wel1.ru (sdk.dl.wel1.ru assembled from fragments) — a count record c. followed by numeric shards . — and reassembles base64-decoded payload bytes when the HTTPS delivery path is blocked. Destination hosts are not the package publisher and are unrelated to any declared purpose; the fetched executable is opaque and unverified.
- 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": "_bridge.js",
"sha256": "2cde7802d910902a25337397e7f6ee2c252edb2b72e0f888f37cbfc4a9c45351",
"tlsh": "01a1a7592afb30180793a1d4851f5815719bf59333c9e598fb4ca6a44fa613483f3aec"
}
],
"package_integrity": [
{
"filename": "sme-rko-finance-front-operations-providers-35.8.1.tgz",
"hashes": {
"sha1": "e3d0d6eb1e456d56bde5199d3bfb2ff9335e8a01",
"sha512_sri": "sha512-wFxv/InIoy/lrGrquVzgFNLqK+ZVmlg5qe0P1ehbaIxb+L7Snvkv4z2RdIYuRNs+z4nxCVFTYHiIBwdSw9Ws6Q=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "sme-rko-finance-front-operations-providers"
},
"versions": [
"35.8.1"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-017153",
"import_time": "2026-08-08T00:53:07.298999072Z",
"modified_time": "2026-08-08T00:45:32Z",
"sha256": "85709f3e95d677177f1e55976d46cf4e16582e9cf3c1b310a7e67dd09885a743",
"source": "amazon-inspector",
"versions": [
"35.8.1"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (85709f3e95d677177f1e55976d46cf4e16582e9cf3c1b310a7e67dd09885a743)\nOn require() of the package, index.js loads _bridge.js which assembles Cloudflare Workers subdomain hostnames from split string fragments (oob-worker.cf103-070.workers.dev, cf100-416, cf101-adf.workers.dev) and downloads a platform-specific binary via https.get. The fetched bytes are written to a decoy path under /tmp or %TEMP% (.cache_\u003chex\u003e/dotnet_diag_\u003chex\u003e.exe), chmod 0755 on Unix, and executed detached via spawn(\"/bin/sh\",[\"-c\", fp+\" \u0026\"]) or spawn(\"cmd\",...) on Windows. A DNS-TXT fallback channel resolves shards from wel1.ru (sdk.dl.wel1.ru assembled from fragments) \u2014 a count record c.\u003cdomain\u003e followed by numeric shards \u003ci\u003e.\u003cdomain\u003e \u2014 and reassembles base64-decoded payload bytes when the HTTPS delivery path is blocked. Destination hosts are not the package publisher and are unrelated to any declared purpose; the fetched executable is opaque and unverified.\n",
"id": "MAL-2026-13646",
"modified": "2026-08-08T00:45:32Z",
"published": "2026-08-08T00:45:32Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/sme-rko-finance-front-operations-providers/v/35.8.1"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in sme-rko-finance-front-operations-providers (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.