MAL-2026-13698

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/simple-date-formatter-new-9/MAL-2026-13698.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13698
Published
2026-08-10T11:53:49Z
Modified
2026-08-10T12:50:29.950906938Z
Summary
Malicious code in simple-date-formatter-new-9 (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (5000b7987ca50d065efc0f5a3ba7c724cb73ac0e23f54347cff8b30aa6eb5d3b)

package.json declares a postinstall script that opens an interactive bash reverse shell to the hardcoded remote address 124.221.154.135:4444 during npm install, granting the operator of that endpoint remote command execution on the installer's host. The tarball additionally ships postinstall.js, which enumerates the installer's ~/.ssh directory and POSTs the file listing along with username and platform information to https://124.221.154.135/post. Both mechanisms target the same hardcoded IP, and the reverse shell fires automatically on npm install.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017230",
            "import_time": "2026-08-10T12:24:44.302416287Z",
            "sha256": "5000b7987ca50d065efc0f5a3ba7c724cb73ac0e23f54347cff8b30aa6eb5d3b",
            "modified_time": "2026-08-10T11:53:49Z",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / simple-date-formatter-new-9

Package

Name
simple-date-formatter-new-9
View open source insights on deps.dev
Purl
pkg:npm/simple-date-formatter-new-9

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/simple-date-formatter-new-9/MAL-2026-13698.json"
indicators 
{
    "evidence_files": [
        {
            "path": "package.json",
            "tlsh": "2ee07d00cd208c7326c585bd855385026b18de1f00003d0db39b1609a79fe7345fc30e",
            "sha256": "2bf4e9d2a0999307511faaea8f0f924cf3ff3658c2e4807a8e3b474048d58317"
        },
        {
            "path": "postinstall.js",
            "tlsh": "273165d558f9cd3007778685639b91263102fe13650ee940f3c807a51fe9a5449f2dee",
            "sha256": "f2be6940c08d36a7f1ce83d5fe16fefd8c14edda5d124e0f6406725beb5020ef"
        }
    ],
    "package_integrity": [
        {
            "filename": "simple-date-formatter-new-9-1.0.0.tgz",
            "hashes": {
                "sha1": "384371595e6a150c210ad8c55f67ff9b1a7c1bd7",
                "sha512_sri": "sha512-tP/lgSE3iKfW4oZ9eI+05/eV6yBse/Wv7/8azo8GmvokUUCMad7R3/b4sXbTO3yQYTDAcpFiScmprha/li21tg=="
            }
        }
    ]
}