MAL-2026-10210

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mcp-notes-server-poc-praetorian/MAL-2026-10210.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10210
Aliases
  • GHSA-rfhm-2wfr-r9p2
Published
2026-07-12T20:55:56Z
Modified
2026-07-23T08:04:57Z
Summary
Malicious code in mcp-notes-server-poc-praetorian (npm)
Details

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

Source: amazon-inspector (2a926b6d3f87c9242af654ce9379abe9e511aa6366efe7667822080968c66f65)

On startup of the CLI/bin entry, mcp-notes-server-poc-praetorian@0.1.0 issues an unconditional HTTPS GET to the hardcoded host ft8swuagwwf6newi.ixx.sh, embedding the installer's process uid and lowercased hostname in the URL path and User-Agent. The interactsh-style subdomain is an out-of-band DNS/HTTP listener that logs every request to the operator of the token, so any host running this MCP server (typically via npx) exposes its uid and hostname to a third-party endpoint. The package is self-labeled a proof-of-concept demonstrating that stdio MCP servers execute arbitrary code in the host's context; the note-taking tools serve as cover for the beacon, which fires before any MCP tool call. Regardless of the PoC framing, publishing this to npm subjects every downstream installer to host-identifier exfiltration to an author-controlled destination.

Source: ghsa-malware (5ddf2a7cbd72bf1853abab49ec68270c28662bf2ac66181c0c5f2d8fbe673152)

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": [
        {
            "id": "IN-MAL-2026-009768",
            "import_time": "2026-07-12T21:20:01.643983342Z",
            "modified_time": "2026-07-12T20:55:56Z",
            "sha256": "2a926b6d3f87c9242af654ce9379abe9e511aa6366efe7667822080968c66f65",
            "source": "amazon-inspector",
            "versions": [
                "0.1.0"
            ]
        },
        {
            "id": "GHSA-rfhm-2wfr-r9p2",
            "import_time": "2026-07-23T07:45:09.060780962Z",
            "modified_time": "2026-07-23T01:02:25Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "5ddf2a7cbd72bf1853abab49ec68270c28662bf2ac66181c0c5f2d8fbe673152",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / mcp-notes-server-poc-praetorian

Package

Name
mcp-notes-server-poc-praetorian
View open source insights on deps.dev
Purl
pkg:npm/mcp-notes-server-poc-praetorian

Affected ranges

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

Affected versions

0.*
0.1.0

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": "src/index.js",
            "sha256": "06c15480b32c82ad603486e865292ac2bb26cec7d565e4e37941453a7187dd31",
            "tlsh": "f881626e64b2d53206c690654e0a9656bb35e0477a6cacb8b6cc83751fcd4ce82f37c8"
        },
        {
            "path": "README.md",
            "sha256": "62e6e8e2a9002b1e0e8156e2f6b3ad91c23324da10c2d6d74f9eec8745765a5a",
            "tlsh": "ccf0dc6dd1f6ba6b00cb4a80427d62ecfb29d46311963d193f0d316d2b08809325b364"
        }
    ],
    "package_integrity": [
        {
            "filename": "mcp-notes-server-poc-praetorian-0.1.0.tgz",
            "hashes": {
                "sha1": "4f596500808d5b081f5dd6baf4aa1de7b78d2351",
                "sha512_sri": "sha512-xOinfE+yP70ibmLDjsXcgjUbr8arT6dV++jEYmZ3JhkBqRSDFExZuDD6osXYxOyEjnJ93DhooXRZ035g2FR9eA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mcp-notes-server-poc-praetorian/MAL-2026-10210.json"