MAL-2026-17330

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/imgbundle/MAL-2026-17330.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17330
Published
2026-09-30T04:50:10Z
Modified
2026-09-30T05:30:05Z
Summary
Malicious code in imgbundle (npm)
Details

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

Source: amazon-inspector (e14218599b46d143fa8e150156864d14d58c327bd8a8816221ac4e8c5cc99350)

The package advertises itself as an image bundler, but index.js performs no image bundling. On require, a top-level IIFE reads an AES-256-CBC-encrypted file at cdn-img-fetch/.cache/banner.jpg inside the sibling dependency cdn-img-fetch, decrypts it with a hardcoded key derived from sha256('nif-runtime-2027'), writes the plaintext to cdn-img-fetch/.runtime/rt.jpg, deletes the source file, and registers an fs.watch on the source directory so the decrypt-and-stage step still fires if the encrypted blob is delivered later. The package also calls cif.ensureCached() on the cdn-img-fetch dependency in an error-recovery path, wiring the two packages together as a coordinated staged dropper: cdn-img-fetch supplies the encrypted bytes and imgbundle acts as the decoder that materializes attacker-controlled content onto the installer's filesystem at import time. The README description of image bundling does not correspond to any code path in the module, and hardcoded-AES-key decryption of an opaque blob from another package is not a legitimate implementation of that stated purpose.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020810",
            "import_time":  "2026-09-30T05:19:45.839423747Z",
            "modified_time":  "2026-09-30T04:50:22Z",
            "sha256":  "1577a61d49bcd6bd941dc6901b176730252973766b198f2065baea643ca81a16",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        },
        {
            "id":  "IN-MAL-2026-020809",
            "import_time":  "2026-09-30T05:19:45.75035256Z",
            "modified_time":  "2026-09-30T04:50:10Z",
            "sha256":  "e14218599b46d143fa8e150156864d14d58c327bd8a8816221ac4e8c5cc99350",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / imgbundle

Package

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

Affected ranges

Affected versions

1.*
1.0.0
1.0.1

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    },
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "index.js",
            "sha256":  "081029d14ba1ddcdf8bee99e82bc3cc6b2fb1a19302532ca425e3c343934ed09",
            "tlsh":  "3f31234219f533354673a2eeaa6b5c8e21a3d6933316d948f6cc0dc60fb30348a325ad"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "imgbundle-1.0.0.tgz",
            "hashes":  {
                "sha1":  "5aa1a891215f673f4ac2761bf16b5c99ee9d13a0",
                "sha512_sri":  "sha512-v3XFGqCPkNOSyjEOD4Fz7AZpR93UmwTB73xpKIp8oPf3WGunhVPNqq/4GI3Sppe7hEd8fbc7wEr5ng8NHTlyww=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/imgbundle/MAL-2026-17330.json"