MAL-2026-18486

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@ifasn/md-doc-mcp/MAL-2026-18486.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18486
Published
2026-11-02T20:58:44Z
Modified
2026-11-02T21:15:06Z
Summary
Malicious code in @ifasn/md-doc-mcp (npm)
Details

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

Source: amazon-inspector (808d25733e867c0cb6808f89bbed4cc90e8362b1e1a2e52759676d51bd0273bb)

The package is advertised as a markdown toolkit MCP server (TOC generation, word count, table formatting) but on require() of its main module and on startup of its md-doc-mcp bin it probes cloud-provider instance-metadata services — AWS IMDSv1/v2 (169.254.169.254), GCP, Azure, and Alibaba Cloud (100.100.100.200) — and sends the per-endpoint responses as query-string parameters over plain HTTP to a hardcoded external host 121.199.24.94, reached both as a bare IP and via the nip.io wildcard-DNS alias 121.199.24.94.nip.io. The outbound request is shaped as ?stage=report&src=md-doc-mcp&nodes=<results>. Source-level naming (CONFIG_NODES, HEALTH_PROBES, pingTelemetry) and Chinese-language comments describing the behavior as enterprise configuration sync and a status-code-only usage ping do not match the actual URLs probed or the destination contacted; IMDS endpoints are not configuration services, and the destination is an unrelated third-party IP rather than any first-party publisher infrastructure. The combination of cloud-metadata enumeration unrelated to the package's declared purpose, plaintext HTTP exfiltration to a bare-IP host disguised through nip.io, and automatic execution on import/startup identifies installers' cloud environments to a third party and provides reconnaissance for follow-on cloud-credential or instance attacks.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-022493",
            "import_time":  "2026-11-02T21:10:55.293208865Z",
            "modified_time":  "2026-11-02T20:58:44Z",
            "sha256":  "808d25733e867c0cb6808f89bbed4cc90e8362b1e1a2e52759676d51bd0273bb",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.5"
            ]
        },
        {
            "id":  "IN-MAL-2026-022501",
            "import_time":  "2026-11-02T21:10:55.868288619Z",
            "modified_time":  "2026-11-02T20:59:48Z",
            "sha256":  "d37d60d7e1b4af36eb2a180e4275392067975b96de90c1093974005ff6fbeff4",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.3"
            ]
        },
        {
            "id":  "IN-MAL-2026-022506",
            "import_time":  "2026-11-02T21:10:56.27863913Z",
            "modified_time":  "2026-11-02T21:00:26Z",
            "sha256":  "e0bb69de5181a0d909fd4906be4d067ab91b2e8b880a17992202bb354881346d",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.4"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @ifasn/md-doc-mcp

Package

Name
@ifasn/md-doc-mcp
View open source insights on deps.dev
Purl
pkg:npm/%40ifasn/md-doc-mcp

Affected ranges

Affected versions

1.*
1.0.3
1.0.4
1.0.5

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"
    },
    {
        "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":  "89298b6753c862d20b71117cb83c75cd53f255b687187fe46bb1d5e6dceffd2c",
            "tlsh":  "6b02e988a4f774260228d0b4945b941ff17592433485ed62fb9cc5583f8e4a8e5ee7fc"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "md-doc-mcp-1.0.5.tgz",
            "hashes":  {
                "sha1":  "e2e27babbfdf87e479ce24f5632ba8532b1f8aa2",
                "sha512_sri":  "sha512-Qc646JUFck0a0iTy3x0i8o0OZXO9YCTWpJgsXw+S2/PrNYlek5PslRq6lXdEiD8LMnvCZElXI1UHc3xNfAy95A=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@ifasn/md-doc-mcp/MAL-2026-18486.json"