MAL-2026-13436

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@wbnr/frontend-shared/MAL-2026-13436.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13436
Aliases
  • GHSA-9vgv-g4jx-8g9w
Published
2026-08-06T16:19:30Z
Modified
2026-09-24T09:30:11Z
Summary
Malicious code in @wbnr/frontend-shared (npm)
Details

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

Source: amazon-inspector (6208a0da32b8b7ae795d85ecbf95788b876729db08b0a595ad24f05a02dbbdbe)

The package declares a preinstall lifecycle script (preinstall.js) that automatically runs on npm install. The script reads the installer's OS username (from process.env USER/USERNAME) and hostname (os.hostname()), embeds them into a subdomain of a hardcoded 4otph6fase1x2won0hrfzul2wt2qqge5.oastify.com callback host, and transmits them via both a DNS lookup and an HTTPS GET to that host at path /depconf/. The behavior is consistent with a dependency-confusion probe using Burp Collaborator (oastify.com) infrastructure; installer identifiers (username, internal hostname, timestamp, package name) are disclosed to a third-party callback domain on every install.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-016680",
            "import_time":  "2026-08-06T18:09:05.150583525Z",
            "modified_time":  "2026-08-06T16:22:04Z",
            "sha256":  "6208a0da32b8b7ae795d85ecbf95788b876729db08b0a595ad24f05a02dbbdbe",
            "source":  "amazon-inspector",
            "versions":  [
                "99.0.0"
            ]
        },
        {
            "id":  "IN-MAL-2026-016675",
            "import_time":  "2026-08-06T18:09:04.478112375Z",
            "modified_time":  "2026-08-06T16:19:30Z",
            "sha256":  "d10e6da61faa186ed684c79707395158b1fd639ebe55ab4b36f13d8f98789fa1",
            "source":  "amazon-inspector",
            "versions":  [
                "99.0.1"
            ]
        },
        {
            "id":  "RLMA-2026-10656",
            "import_time":  "2026-09-24T09:21:31.725956377Z",
            "modified_time":  "2026-09-22T17:14:07Z",
            "sha256":  "4a79c3e3ce71d3606fd677207cd089ab148f2a7bae8fe546a2f3dfb13349eef3",
            "source":  "reversing-labs",
            "versions":  [
                "99.0.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @wbnr/frontend-shared

Package

Name
@wbnr/frontend-shared
View open source insights on deps.dev
Purl
pkg:npm/%40wbnr/frontend-shared

Affected ranges

Affected versions

99.*
99.0.0
99.0.1

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":  "preinstall.js",
            "sha256":  "e54aed4cc27b61f78dd095fb67b92e1dff62bd9508b16f0b56d66357611dbb0d",
            "tlsh":  "fc0123f8b3e5eb310cd013c4b16c2e2f565be3a231ce9892085563c207b3a71c310ba8"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "frontend-shared-99.0.0.tgz",
            "hashes":  {
                "sha1":  "110a186c4d8b59c46565976372a795ecc1157607",
                "sha512_sri":  "sha512-ILBG4IsmDmnQjWKchK65cChG/k4uM2p5wY/ytgcVYpzCAluOM9LALSBXa9T+PgprGkmlVKe3D8WGK12lmwXwTw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@wbnr/frontend-shared/MAL-2026-13436.json"