{"cve":"CVE-2026-114126","nvd":{"published":"2026-10-21T18:17:25.130","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, the Storybook development server can expose its WebSocket authentication token to clients able to load its HTML pages over a local network. A LAN attacker can obtain the token and invoke WebSocket-backed file-writing or testing functionality. Weak story-write validation can allow code to be placed in story files. If the Storybook Vitest addon is installed with an old version of Vitest, the payload can use a Vitest API to write additional files or execute commands. Depending on the payload and local tooling, the attack can lead to 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:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N","score":8.7},"cvss_v3":null,"cwes":["CWE-22","CWE-94","CWE-306"],"references":["https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da","https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178","https://github.com/storybookjs/storybook/commit/5540f03b209cc56c66f56a9c7cb4b2ee5b883ce5","https://github.com/storybookjs/storybook/commit/a9ef9345d73224c73e0b81dc2701ec5b465ea9bb","https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:26.291718493+00:00"},"epss":{"cve":"CVE-2026-114126","score":0.00529,"percentile":0.44468,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-px85-f4q5-jh77","url":"https://osv.dev/vulnerability/GHSA-px85-f4q5-jh77","summary":"Storybook dev server vulnerable to code injection from the local network","modified":"2026-10-22T16:45:03.723842082Z","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."]}