n8n-MCP: Authenticated SSRF in n8n-mcp webhook and API client paths_CVE-2026-44694

{
    "lastseen": "",
    "description": "n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. From version 2.18.7 to before version 2.50.2, there is an authenticated server-side request forgery vulnerability affecting the webhook trigger tools, the n8n API client (N8N_API_URL), and per-request URLs supplied via the x-n8n-url header in multi-tenant HTTP mode. This issue has been patched in version 2.50.2.",
    "published": "2026-05-08T19:12:05.326Z",
    "modified": "2026-05-08T19:12:05.326Z",
    "type": "cve",
    "title": "n8n-MCP: Authenticated SSRF in n8n-mcp webhook and API client paths",
    "source": "GitHub_M",
    "references": "https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r\nhttps://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb\nhttps://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2",
    "id": "CVE-2026-44694",
    "bulletinFamily": "",
    "cwe": [
        "CWE-367",
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "czlonkowski n8n-mcp >= 2.18.7, < 2.50.2",
    "sourceHref": "",
    "cvss": {
        "score": 7.2,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "n8n-mcp",
    "version": ">= 2.18.7, < 2.50.2",
    "vendor": "czlonkowski",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}