Malicious code in pf25133 (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (504c3f95c937a05e14c220c767a0e18f4cada866ee5eebad0749457232ace73b) The package's declared main module index.js is an IIFE that reads document.cookie, fetches a hardcoded list of application paths, extracts flag-shaped patterns from the responses, and POSTs the aggregated data as JSON to a hardcoded webhook.site collector URL (https://webhook.site/c4e39647-bfb8-47ef-b6d4-a112aacc6cd1). The behavior is unconditional on load and the destination is not configurable. webhook.site is a generic anonymous request-bin service unrelated to any legitimate first-party endpoint, and the package ships no functionality other than this collection payload. ## Source: ghsa-malware (2a468a0f803545c964b7fd5cf12d9a26dd7be416ee34d3d3728edecf99d5031f) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
MAL-2026-16339
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-2026-16339
pf25133
Source reference: /affected/0/package/name
- Affected versions
- 1.0.0
Source 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.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pf25133",
"purl": "pkg:npm/pf25133",
"ecosystem": "npm"
},
"versions": [
"1.0.0"
],
"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."
}
],
"source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/pf25133/MAL-2026-16339.json",
"indicators": {
"evidence_files": [
{
"path": "index.js",
"tlsh": "99f0dc222e7d102c0a80bacf213bb3b0dc10d815b893cdd483980f3e5b060da58a1294",
"sha256": "0d562fbe1e816fb21df7acb49b0f5d293045219699ab0d0afc92e66545e68ae6"
}
],
"package_integrity": [
{
"hashes": {
"sha1": "ca711fc5033de59190fb6242e4841c90d30f6c84",
"sha512_sri": "sha512-XJG0w20lV5ePvlxW+vULkH4I7h8TAIsI57ftq8rei3YIcEYYUu4BUBDjTN3FwktqApPxk2zbbWx6r9UdWC266w=="
},
"filename": "pf25133-1.0.0.tgz"
}
]
}
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #59041 · Revision 1
- Added to Heist Feed
- Publisher date