CVE-2026-114125 (GCVE-0-2026-114125)

Vulnerability from cvelistv5 – Published: 2026-10-21 17:08 – Updated: 2026-10-21 17:08
VLAI
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.
Severity
8.6 (High)
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
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-346 - Origin Validation Error
  • CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7635 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
storybookjs storybook Affected: >= 8.0.0, < 8.6.19
Affected: >= 9.0.0, < 9.1.21
Affected: >= 10.0.0, < 10.6.2
Affected: >= 11.0.0-alpha.0, < 11.0.0-alpha.6
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "storybook",
          "vendor": "storybookjs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.6.19"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.0.0, \u003c 9.1.21"
            },
            {
              "status": "affected",
              "version": "\u003e= 10.0.0, \u003c 10.6.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.0.0-alpha.0, \u003c 11.0.0-alpha.6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s privileges. This issue is fixed in 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-1021",
              "description": "CWE-1021: Improper Restriction of Rendered UI Layers or Frames",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T17:08:12.102Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/storybookjs/storybook/security/advisories/GHSA-f2ph-cmg5-wxc8",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/storybookjs/storybook/security/advisories/GHSA-f2ph-cmg5-wxc8"
        },
        {
          "name": "https://github.com/storybookjs/storybook/pull/36726",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/pull/36726"
        },
        {
          "name": "https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da"
        },
        {
          "name": "https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178"
        },
        {
          "name": "https://github.com/storybookjs/storybook/commit/97513d999910d071c2b36830495dab63e17d9fe0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/commit/97513d999910d071c2b36830495dab63e17d9fe0"
        },
        {
          "name": "https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e"
        },
        {
          "name": "https://github.com/storybookjs/storybook/commit/df3fed468c9b4830605f00068c4bc6b7e1e215ed",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/commit/df3fed468c9b4830605f00068c4bc6b7e1e215ed"
        },
        {
          "name": "https://github.com/storybookjs/storybook/releases/tag/v10.6.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/releases/tag/v10.6.2"
        },
        {
          "name": "https://github.com/storybookjs/storybook/releases/tag/v11.0.0-alpha.6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/releases/tag/v11.0.0-alpha.6"
        },
        {
          "name": "https://github.com/storybookjs/storybook/releases/tag/v8.6.19",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/releases/tag/v8.6.19"
        },
        {
          "name": "https://github.com/storybookjs/storybook/releases/tag/v9.1.21",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/storybookjs/storybook/releases/tag/v9.1.21"
        }
      ],
      "source": {
        "advisory": "GHSA-f2ph-cmg5-wxc8",
        "discovery": "UNKNOWN"
      },
      "title": "Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-114125",
    "datePublished": "2026-10-21T17:08:12.102Z",
    "dateReserved": "2026-10-20T21:53:58.472Z",
    "dateUpdated": "2026-10-21T17:08:12.102Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-114125",
      "date": "2026-10-22",
      "epss": "0.00375",
      "percentile": "0.30254"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "storybook",
                "vendor": "storybookjs",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 8.0.0, \u003c 8.6.19"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 9.0.0, \u003c 9.1.21"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 10.0.0, \u003c 10.6.2"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 11.0.0-alpha.0, \u003c 11.0.0-alpha.6"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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\u0027s privileges. This issue is fixed in 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6."
          }
        ],
        "id": "CVE-2026-114125",
        "lastModified": "2026-10-21T18:17:24.957",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 8.6,
                "baseSeverity": "HIGH",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "ACTIVE",
                "valueDensity": "NOT_DEFINED",
                "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-21T18:17:24.957",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/commit/97513d999910d071c2b36830495dab63e17d9fe0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/commit/df3fed468c9b4830605f00068c4bc6b7e1e215ed"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/pull/36726"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/releases/tag/v10.6.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/releases/tag/v11.0.0-alpha.6"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/releases/tag/v8.6.19"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/releases/tag/v9.1.21"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/storybookjs/storybook/security/advisories/GHSA-f2ph-cmg5-wxc8"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-94"
              },
              {
                "lang": "en",
                "value": "CWE-346"
              },
              {
                "lang": "en",
                "value": "CWE-1021"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-10-21T19:31:46+00:00",
      "cve": "CVE-2026-114125",
      "id": "CVE-2026-114125",
      "initial_release_date": "2026-10-21T17:08:12.102000+00:00",
      "product_status:known_affected": "13",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "storybook: Storybook: Arbitrary code execution via insufficient message-origin restrictions",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-114125.json",
      "version": "3"
    }
  }
}



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