Malicious code in c2-client (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (8c5e21fe48a0a1a03a1846e11cb06360950603c3bd8ccba5979c431c84779ba0) The package name is 'c2-client' and package.json declares a postinstall hook that executes 'node setup.js' automatically on npm install. The setup script runs unattended in the installer's environment with the installer's privileges and network access. Combined with the package's self-declared C2-client purpose, install of this package is expected to establish an attacker-controlled command channel or execute attacker-controlled code on the installer's machine at install time.
MAL-2026-17165
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-2026-17165
c2-client
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.
[
{
"package": {
"name": "c2-client",
"purl": "pkg:npm/c2-client",
"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."
}
],
"source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/c2-client/MAL-2026-17165.json",
"indicators": {
"evidence_files": [
{
"path": "package.json",
"tlsh": "81e0df239da25c7728f88ba69d2ac645f0624b3f10211d0f74ff801c4fb322255aef19",
"sha256": "c9c9ab6cd10576fc108eb9b05e4e67c65a013eacb19b6673c5edc1ffc6910d4f"
}
],
"package_integrity": [
{
"hashes": {
"sha1": "470818098d8ff778ccdd74bca1b07e8471006481",
"sha512_sri": "sha512-lWnOqj3l6G+PSIcJXfOZOOwU1lXhtnemPF7MsRLFY0TYfh6BvszHFuXBxlJhaMwu0OWgOLwVL+Hm46xH2mGoPA=="
},
"filename": "c2-client-1.0.0.tgz"
}
]
}
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #13832 · Revision 1
- Added to Heist Feed
- Publisher date