Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation_CVE-2025-9611

{
    "lastseen": "",
    "description": "Microsoft Playwright MCP Server versions prior to 0.0.40 fails to validate the Origin header on incoming connections. This allows an attacker to perform a DNS rebinding attack via a victim\u2019s web browser and send unauthorized requests to a locally running MCP server, resulting in unintended invocation of MCP tool endpoints.",
    "published": "2026-01-07T04:24:13.705Z",
    "modified": "2026-01-07T04:24:13.705Z",
    "type": "cve",
    "title": "Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation",
    "source": "VulnCheck",
    "references": "https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-8rgw-6xp9-2fg3\nhttps://github.com/microsoft/playwright/commit/1313fbd\nhttps://www.vulncheck.com/advisories/microsoft-playwright-mcp-server-dns-rebinding-via-missing-origin-header-validation",
    "id": "CVE-2025-9611",
    "bulletinFamily": "",
    "cwe": [
        "CWE-749"
    ],
    "cvelist": null,
    "sourceData": "Microsoft Playwright 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.2,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:L/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": "Playwright",
    "version": "0",
    "vendor": "Microsoft",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}