MAL-2026-5485

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mcp-server-supabase/MAL-2026-5485.json
JSON Data
https://api.test.osv.dev/v1/vulns/MAL-2026-5485
Published
2026-06-09T20:33:36Z
Modified
2026-06-12T20:01:44.109242621Z
Summary
Malicious code in mcp-server-supabase (npm)
Details

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

Source: amazon-inspector (85ea87cccc1a60ceb3cf3efe3d5e9839ae5e2a53beaa024a66827f2cdc2504c8)

Package squats the unscoped name mcp-server-supabase to intercept npx mcp-server-supabase invocations intended for the official scoped Supabase Model Context Protocol server. package.json declares "postinstall": "node index.js", and index.js collects os.hostname(), os.platform(), process.cwd(), npm_config_user_agent, and Node.js version, then POSTs them to https://npx-canary-log.vulnerable-live.workers.dev/log (hardcoded at index.js:16). Every install or npx invocation silently transmits installer host identifiers to an attacker-controlled Cloudflare Workers endpoint, with no consent, opt-out, or documentation prior to install. The name-confusion attack ensures AI coding agents and developer tooling that invoke the unscoped name are routed to this code instead of the legitimate scoped package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-06-09T20:33:37Z",
            "source": "amazon-inspector",
            "sha256": "08b416eb115aa1fc3bcf831a10dcb808fcaa66c0c5d8986fc10fe61ca901584d",
            "id": "IN-MAL-2026-005218",
            "versions": [
                "0.0.1"
            ],
            "import_time": "2026-06-09T20:45:55.633073611Z"
        },
        {
            "modified_time": "2026-06-09T20:33:36Z",
            "source": "amazon-inspector",
            "sha256": "fdd7519780160ab3a92639d54eab0a62f08b3d435e61276f4ba599c638c3cd40",
            "id": "IN-MAL-2026-005217",
            "versions": [
                "0.0.1"
            ],
            "import_time": "2026-06-09T20:45:55.5165788Z"
        },
        {
            "modified_time": "2026-06-12T19:04:50Z",
            "source": "amazon-inspector",
            "sha256": "437a772e3658568d06f1071a482406523fe96faa46bddc4be35a2e3a45a216ec",
            "id": "IN-MAL-2026-005920",
            "import_time": "2026-06-12T19:43:47.636332059Z",
            "versions": [
                "0.0.2"
            ]
        },
        {
            "modified_time": "2026-06-12T19:04:49Z",
            "source": "amazon-inspector",
            "sha256": "85ea87cccc1a60ceb3cf3efe3d5e9839ae5e2a53beaa024a66827f2cdc2504c8",
            "id": "IN-MAL-2026-005919",
            "versions": [
                "0.0.2"
            ],
            "import_time": "2026-06-12T19:43:47.541860966Z"
        }
    ]
}
References
Credits

Affected packages

npm / mcp-server-supabase

Package

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

Affected ranges

Affected versions

0.*
0.0.1
0.0.2

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mcp-server-supabase/MAL-2026-5485.json"
cwes 
[
    {
        "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."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "mcp-server-supabase-0.0.1.tgz",
            "hashes": {
                "sha512_sri": "sha512-BsJPxD8cz1K9NMUPcgPmb6WD6bJwccDiFHZkVNqx2P+GBvC+mfA+AL/G9jzFkWHbOXfMg44XkVCOtQQLE5daSQ==",
                "sha1": "53c3f9388bd9cb7fd862b9d6dd1c46f2b7b935c2"
            }
        }
    ],
    "evidence_files": [
        {
            "sha256": "f51bf8adfd8286861e0d580cb654ec8c989708c2174a85a98192f5b1363f968f",
            "tlsh": "133195e181f805351bee46d3e1e9a899a36ff1263a0778f0b45e02691fc909807b1cd2",
            "path": "index.js"
        },
        {
            "sha256": "fc34b558cf6802024814801a560fa4ee4c85470ab43a171c2c13a94d4081c7cc",
            "tlsh": "4af09e70d87495330aed4ae10476a444b579aa161640fc2913d3506cd75c9b713bf29c",
            "path": "package.json"
        }
    ],
    "domains": [
        "npx-canary-log.vulnerable-live.workers.dev"
    ]
}