Malicious code in merchantweb-lang-cookie-reset (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (fff16333aa7ffc7fc2c7decc1458c23b7d89f8caacb5c6129ba76168d08ec4be) package.json declares the sole dependency `packet-table-thread-stream` as a direct tarball URL to a non-npm host (`https://artifacts.yosiroute.com/npm/packet-table-thread-stream`), with no version pin and no integrity hash. The shrinkwrap marks that dependency `hasInstallScript: true`, so on `npm install` npm fetches opaque code from `artifacts.yosiroute.com` and executes its lifecycle scripts on the installer's machine, bypassing npm registry scanning. The wrapper package itself is a disposable shim: index.js is trivial (only re-exports name/version), and package.json metadata is placeholder (`author: Package Registry`, `description: Generated package`, `repo: github.com/example/...`). The package's only functional effect on install is pulling attacker-controlled code from a non-registry host into the installer's dependency tree and running its install scripts.
MAL-2026-13449
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:MAL-2026-13449
merchantweb-lang-cookie-reset
Source reference: /affected/0/package/name
- Affected versions
- 99.99.99
Source reference:
/affected/0/versions1.0.998Source reference:
/affected/0/versions2.0.0Source reference:
/affected/0/versions0.1.999Source reference:
/affected/0/versions0.999.999Source reference:
/affected/0/versions0.1.0Source reference:
/affected/0/versions1.999.999Source reference:
/affected/0/versions1.0.999Source reference:
/affected/0/versions0.0.999Source reference:
/affected/0/versions0.0.6Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"package": {
"name": "merchantweb-lang-cookie-reset",
"purl": "pkg:npm/merchantweb-lang-cookie-reset",
"ecosystem": "npm"
},
"versions": [
"99.99.99",
"1.0.998",
"2.0.0",
"0.1.999",
"0.999.999",
"0.1.0",
"1.999.999",
"1.0.999",
"0.0.999",
"0.0.6"
],
"database_specific": {
"cwes": [
{
"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",
"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",
"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."
}
],
"source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/merchantweb-lang-cookie-reset/MAL-2026-13449.json",
"indicators": {
"evidence_files": [
{
"path": "npm-shrinkwrap.json",
"tlsh": "1df04669c16a79f352d2a6e885758943a963c00f510c685dbb9cc019cf0e5ab34b5a08",
"sha256": "08861f89f25f8a326cadf906823bb7a2a5c6c1b8cb619704c56dfa69e740d4a9"
},
{
"path": "package.json",
"tlsh": "ebf02038c618a6b34ad509d89c655843aa278d1fe208b8999bd2c13a870e09728be91d",
"sha256": "1f24d7f512fba7b853e6ed55acb38035b7201621295739331daae1ef7f5653e0"
}
],
"package_integrity": [
{
"hashes": {
"sha1": "ec87e43dfa088eb04e0e7390f0133169f71adf5d",
"sha512_sri": "sha512-wB/2nNHxpKGl8UauABjQIxwQE/+IQs4Wy8epQ5dkazZidVQDthoW5fJSavfeg4iWEQ85LFLBJETUWfQy9aT7RQ=="
},
"filename": "merchantweb-lang-cookie-reset-99.99.99.tgz"
}
]
}
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #10960 · Revision 1
- Added to Heist Feed
- Publisher date