MAL-2026-6318
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (8847a06a4d25b751ec7d33732a23324a42d7b2775ce441811623500b7b60f267)
Package masquerades as a TypeScript lint helper but ships a credential-harvesting payload in index.js. The exported from_str() recursively walks process.cwd() and uploads every file matching id.json, config.toml, Config.toml, config.json, env, and.env to https://data-stream.space/api/v1 via axios POST (index.js:178). It additionally harvests shell history from ~/.bash_history, ~/.zsh_history, fish history, ~/.sh_history, and PowerShell PSReadLine ConsoleHost_history.txt, falling back to spawning bash -c history and zsh -c 'fc -l -1000' via execSync (index.js:101, 117, 128-152). The exfiltration URL and target file patterns are base64-encoded module-level constants decoded through a decodeStr helper (index.js:8-30) to evade naive string scanners. Username and local IP are prepended to each upload. The bundled test.js auto-invokes from_str() under npm test. Package metadata is hollow (empty description, author, keywords) and the name mimics legitimate TypeScript lint tooling. Any consumer that requires this package and calls from_str(), or runs npm test, ships their working-directory secrets and shell history to the attacker-controlled host.
- 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": "index.js",
"sha256": "addbcd00de83cb84cce6655375cce010012e1d9724207692c05a7b5699034e7d",
"tlsh": "94e166aa01162136d6f1e3f8eb560416f79ed2137602c74276ac4ac92f77428e1d2fec"
},
{
"path": "package.json",
"sha256": "cdea78bc905183eb899ea3a9363778b427c7cc704c2f1fe88fa983cf538a04b9",
"tlsh": "2fe0c2328e69a93708f8a6a56e681b03f1618f2f12748c0f71f7551c97e31a304a8f4d"
}
],
"package_integrity": [
{
"filename": "ts-bn-lint-helper-3.1.19.tgz",
"hashes": {
"sha1": "5575cbd59199abe6385ec39e64e82c53ed1e497d",
"sha512_sri": "sha512-tVD1gUs5BvFLxhrm6JjlchfG2r0xESuFdGF6r4gcn7e3ZhfHafIDWnTED8YROBGyVeGC1QeV/MCurgi+n/zeog=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "ts-bn-lint-helper"
},
"versions": [
"3.1.19"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-007264",
"import_time": "2026-06-23T16:54:12.807378937Z",
"modified_time": "2026-06-23T16:11:21Z",
"sha256": "8847a06a4d25b751ec7d33732a23324a42d7b2775ce441811623500b7b60f267",
"source": "amazon-inspector",
"versions": [
"3.1.19"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (8847a06a4d25b751ec7d33732a23324a42d7b2775ce441811623500b7b60f267)\nPackage masquerades as a TypeScript lint helper but ships a credential-harvesting payload in index.js. The exported from_str() recursively walks process.cwd() and uploads every file matching id.json, config.toml, Config.toml, config.json, env, and.env to https://data-stream.space/api/v1 via axios POST (index.js:178). It additionally harvests shell history from ~/.bash_history, ~/.zsh_history, fish history, ~/.sh_history, and PowerShell PSReadLine ConsoleHost_history.txt, falling back to spawning `bash -c history` and `zsh -c \u0027fc -l -1000\u0027` via execSync (index.js:101, 117, 128-152). The exfiltration URL and target file patterns are base64-encoded module-level constants decoded through a `decodeStr` helper (index.js:8-30) to evade naive string scanners. Username and local IP are prepended to each upload. The bundled test.js auto-invokes from_str() under `npm test`. Package metadata is hollow (empty description, author, keywords) and the name mimics legitimate TypeScript lint tooling. Any consumer that requires this package and calls from_str(), or runs npm test, ships their working-directory secrets and shell history to the attacker-controlled host.\n",
"id": "MAL-2026-6318",
"modified": "2026-06-23T16:11:21Z",
"published": "2026-06-23T16:11:21Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/ts-bn-lint-helper/v/3.1.19"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in ts-bn-lint-helper (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.