{"cve":"CVE-2026-114125","nvd":{"published":"2026-10-21T18:17:24.957","modified":"2026-10-22T17:21:57.293","status":"Awaiting Analysis","description":"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.","cvss_v4":{"vector":"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","score":8.6},"cvss_v3":null,"cwes":["CWE-94","CWE-346","CWE-1021"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:26.291718493+00:00"},"epss":{"cve":"CVE-2026-114125","score":0.00385,"percentile":0.32265,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-f2ph-cmg5-wxc8","url":"https://osv.dev/vulnerability/GHSA-f2ph-cmg5-wxc8","summary":"Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites","modified":"2026-10-21T17:35:19.889160714Z","packages":[{"ecosystem":"npm","name":"storybook","purl":"pkg:npm/storybook","ranges":[">=8.0.0 <8.6.19"],"fixed":["8.6.19"]},{"ecosystem":"npm","name":"storybook","purl":"pkg:npm/storybook","ranges":[">=9.0.0 <9.1.21"],"fixed":["9.1.21"]},{"ecosystem":"npm","name":"storybook","purl":"pkg:npm/storybook","ranges":[">=10.0.0 <10.6.2"],"fixed":["10.6.2"]},{"ecosystem":"npm","name":"storybook","purl":"pkg:npm/storybook","ranges":[">=11.0.0-alpha.0 <11.0.0-alpha.6"],"fixed":["11.0.0-alpha.6"]},{"ecosystem":"npm","name":"@storybook/core","purl":"pkg:npm/%40storybook/core","ranges":[">=8.0.0 <8.6.19"],"fixed":["8.6.19"]},{"ecosystem":"npm","name":"@storybook/core-server","purl":"pkg:npm/%40storybook/core-server","ranges":[">=8.0.0 <8.6.19"],"fixed":["8.6.19"]},{"ecosystem":"npm","name":"@storybook/experimental-addon-test","purl":"pkg:npm/%40storybook/experimental-addon-test","ranges":[">=8.0.0 <8.6.19"],"fixed":["8.6.19"]},{"ecosystem":"npm","name":"@storybook/addon-vitest","purl":"pkg:npm/%40storybook/addon-vitest","ranges":[">=9.0.0 <9.1.21"],"fixed":["9.1.21"]},{"ecosystem":"npm","name":"@storybook/addon-vitest","purl":"pkg:npm/%40storybook/addon-vitest","ranges":[">=10.0.0 <10.6.2"],"fixed":["10.6.2"]},{"ecosystem":"npm","name":"@storybook/addon-vitest","purl":"pkg:npm/%40storybook/addon-vitest","ranges":[">=11.0.0-alpha.0 <11.0.0-alpha.6"],"fixed":["11.0.0-alpha.6"]},{"ecosystem":"npm","name":"@storybook/addon-mcp","purl":"pkg:npm/%40storybook/addon-mcp","ranges":[">=10.6.0 <10.6.2"],"fixed":["10.6.2"]},{"ecosystem":"npm","name":"@storybook/addon-mcp","purl":"pkg:npm/%40storybook/addon-mcp","ranges":[">=11.0.0-alpha.0 <11.0.0-alpha.6"],"fixed":["11.0.0-alpha.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}