Malicious code in simple-date-formatter-new-12 (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (bd79db99adb8878673dd85db5a29661432808fa8fcc5e3d750b907418df8ae5f) npm package simple-date-formatter-new-12@1.0.0 declares a postinstall lifecycle script in package.json that runs automatically on `npm install`. The script uses curl to fetch an internal Baidu host (http://bsrc-ssrf.n.baidu-int.com/...), writes the response to /tmp/bsrc.txt, and POSTs the contents to an attacker-controlled interactsh collector at pdxkwzizhzzdpzpgcieqk6d1v7ynqsgfo.oast.fun/bsrc. The package's advertised purpose is a trivial date-formatting wrapper (index.js exports a single formatDate function); the SSRF probe and outbound exfiltration are unrelated to that purpose. The name shape (`simple-date-formatter-new-12`), empty author metadata, and OAST beacon are consistent with a dependency-confusion / typosquat probe designed to detect installation inside a target organization and leak internal network responses reachable from the installer's network position to a third-party collector.
MAL-2026-17229
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-2026-17229
simple-date-formatter-new-12
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": "simple-date-formatter-new-12",
"purl": "pkg:npm/simple-date-formatter-new-12",
"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/simple-date-formatter-new-12/MAL-2026-17229.json",
"indicators": {
"evidence_files": [
{
"path": "package.json",
"tlsh": "3af05c44d6046db357c386fc9a66050e7b01ae1714447d05b3aa08ac839aef641ba30f",
"sha256": "b4d64adc3fc3bb08e95661f461973e58576b1800650da2dba44eff2548dcffa9"
}
],
"package_integrity": [
{
"hashes": {
"sha1": "040d3c85a17f9e618d8e22b6cd60394ef9c7f60f",
"sha512_sri": "sha512-fKDny5UVQjvfzJkCUcTJ5vw4m/I90MHxhGQd0QvmEVFZKgfVncxB8b1+/Yy9zzxSqrpjyMXg/HSXGPH+SOio5w=="
},
"filename": "simple-date-formatter-new-12-1.0.0.tgz"
}
]
}
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #23576 · Revision 1
- Added to Heist Feed
- Publisher date