MAL-2026-16304

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@nimbusedge2/authxsas1/MAL-2026-16304.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16304
Published
2026-09-21T03:06:48Z
Modified
2026-09-21T03:30:17Z
Summary
Malicious code in @nimbusedge2/authxsas1 (npm)
Details

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

Source: amazon-inspector (0b27280b8f4c1e044e49b77e58c7c8de895a002f51be51756bc40e909d3f6fa1)

package.json declares a preinstall lifecycle script that runs automatically on npm install. The script uses curl to fetch the cloud instance metadata service (169.254.169.254, accessed via the nip.io wildcard-DNS wrapper 169.254.169.254.nip.io/latest/meta-data/), base64-encodes the response, and POSTs it to a hardcoded third-party endpoint at http://canarytokens.com/terms/7dc94zmd3so67n5vbz5bxmt7v/contact.php. On cloud and CI installers this discloses instance identity metadata and, where IMDSv1 is reachable, temporary IAM credentials to the destination. The package's description field self-labels the beacon as an 'Authorized report' with a wearehackerone.com contact address; that label is author-controlled and does not change the behavior class — installing the package causes installer-side host and cloud metadata to be sent off-host to a canarytoken beacon.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020200",
            "import_time":  "2026-09-21T03:24:20.793924532Z",
            "modified_time":  "2026-09-21T03:06:48Z",
            "sha256":  "0b27280b8f4c1e044e49b77e58c7c8de895a002f51be51756bc40e909d3f6fa1",
            "source":  "amazon-inspector",
            "versions":  [
                "1.1.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @nimbusedge2/authxsas1

Package

Name
@nimbusedge2/authxsas1
View open source insights on deps.dev
Purl
pkg:npm/%40nimbusedge2/authxsas1

Affected ranges

Affected versions

1.*
1.1.0

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":  "9deec62ca431734fd37ac8c8dc0d80ae644122f888c1774e3ec2261571d752a6",
            "tlsh":  "dce0c02816107c772dcdc7e0b676432976b47b1f4e80ae0c9093091c1e2d9de3a23f44"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "authxsas1-1.1.0.tgz",
            "hashes":  {
                "sha1":  "1abe81349ad7271f4bb2e14cff4680c388214d29",
                "sha512_sri":  "sha512-dmnPZZhfLMwp5jbBiybJNxeZN/gOVLz3GwCHY2ZiXxG3BeRNPliTjG3kCBHhQ0CTImNGNNV29L0BrrS23K03ow=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@nimbusedge2/authxsas1/MAL-2026-16304.json"