Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites

{
  "id": "b89128975eb643e7356584576e234e9945fde142b50227c6d599af0a9db4d796",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-114125",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites",
    "summary": "Storybook is a frontend workshop for building user interface components and pages in isolation. From 8.0.0 until 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6, a malicious website can interact with the preview of a running Storybook development server. Insufficient iframe embedding and message-origin restrictions can allow attacker-controlled events to reach the running preview. A developer must visit the malicious website and interact with the injected interface. The attack can cause unauthorized changes to story files and, if a changed file is later executed by a local runtime, arbitrary code execution with the developer's privileges. This issue is fixed in 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6.",
    "evidence": "cve:CVE-2026-114125",
    "products": [
      {
        "name": {
          "value": "storybook",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-114125",
      "aliases": [
        "CVE-2026-114125"
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 8.6,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "userInteraction": "ACTIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "storybookjs",
          "product": "storybook",
          "versions": [
            {
              "status": "affected",
              "version": ">= 8.0.0, < 8.6.19"
            },
            {
              "status": "affected",
              "version": ">= 9.0.0, < 9.1.21"
            },
            {
              "status": "affected",
              "version": ">= 10.0.0, < 10.6.2"
            },
            {
              "status": "affected",
              "version": ">= 11.0.0-alpha.0, < 11.0.0-alpha.6"
            }
          ]
        }
      ],
      "modified": "2026-10-28T17:13:06.610Z",
      "provider": "cve",
      "references": [
        "https://github.com/storybookjs/storybook/security/advisories/GHSA-f2ph-cmg5-wxc8",
        "https://github.com/storybookjs/storybook/pull/36726",
        "https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da",
        "https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178",
        "https://github.com/storybookjs/storybook/commit/97513d999910d071c2b36830495dab63e17d9fe0",
        "https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e",
        "https://github.com/storybookjs/storybook/commit/df3fed468c9b4830605f00068c4bc6b7e1e215ed",
        "https://github.com/storybookjs/storybook/releases/tag/v10.6.2",
        "https://github.com/storybookjs/storybook/releases/tag/v11.0.0-alpha.6",
        "https://github.com/storybookjs/storybook/releases/tag/v8.6.19",
        "https://github.com/storybookjs/storybook/releases/tag/v9.1.21"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-114125",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-28T17:12:45.621272Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-28T17:13:06.610Z"
            }
          }
        ],
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-21T17:08:12.102Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-114125",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 464404,
  "published_at": "2026-10-21T17:08:12.102+00:00"
}