Firecrawl before 2.11.586 SSRF Protection Bypass via DNS Rebinding in Playwright Service

{
  "id": "ad6b39a42b78cc6e88981a135d8277a48f14fef5477d7de675f7e91cace23cf5",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116066",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Firecrawl before 2.11.586 SSRF Protection Bypass via DNS Rebinding in Playwright Service",
    "summary": "Firecrawl before 2.11.586 contains a server-side request forgery vulnerability in the Playwright service SSRF proxy that allows attackers to bypass isInternalHost checks via DNS rebinding. Attackers controlling DNS for a scrape target can return a public address during validation and a private address at connect time, retrieving cloud metadata and internal resources through the scrape API.",
    "evidence": "cve:CVE-2026-116066",
    "products": [
      {
        "name": {
          "value": "Firecrawl",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-116066",
      "aliases": [
        "CVE-2026-116066"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 7,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:L",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "LOW",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "CHANGED",
            "version": "3.1",
            "baseScore": 6.8,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
            "integrityImpact": "NONE",
            "userInteraction": "NONE",
            "attackComplexity": "HIGH",
            "availabilityImpact": "NONE",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "Firecrawl",
          "product": "Firecrawl",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2.11.586",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-25T11:50:55.818Z",
      "provider": "cve",
      "references": [
        "https://github.com/firecrawl/firecrawl/issues/5256",
        "https://github.com/firecrawl/firecrawl",
        "https://github.com/firecrawl/firecrawl/blob/5c198a7d9376fef21a7f6d74313fc957842744ad/apps/playwright-service-ts/api.ts#L47-L117",
        "https://github.com/firecrawl/firecrawl/commit/5e74ff37b41ac650d6bccff170a9be0a6decb946",
        "https://www.vulncheck.com/advisories/firecrawl-before-2.11.586-ssrf-protection-bypass-via-dns-rebinding-in-playwright-service"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-25T11:50:55.818Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116066",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 136260,
  "published_at": "2026-10-25T11:50:55.818+00:00"
}