CVE-2026-114126
Severity not reportedStorybook is a frontend workshop for building user interface components and pages in isolation.
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.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da security-advisories@github.com
- https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178 security-advisories@github.com
- https://github.com/storybookjs/storybook/commit/5540f03b209cc56c66f56a9c7cb4b2ee5b883ce5 security-advisories@github.com
- https://github.com/storybookjs/storybook/commit/a9ef9345d73224c73e0b81dc2701ec5b465ea9bb security-advisories@github.com
- https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e security-advisories@github.com
- https://github.com/storybookjs/storybook/commit/df3fed468c9b4830605f00068c4bc6b7e1e215ed security-advisories@github.com
- https://github.com/storybookjs/storybook/pull/36726 security-advisories@github.com
- https://github.com/storybookjs/storybook/releases/tag/v10.6.2 security-advisories@github.com
- https://github.com/storybookjs/storybook/releases/tag/v11.0.0-alpha.6 security-advisories@github.com
- https://github.com/storybookjs/storybook/releases/tag/v8.6.19 security-advisories@github.com
- https://github.com/storybookjs/storybook/releases/tag/v9.1.21 security-advisories@github.com
- https://github.com/storybookjs/storybook/security/advisories/GHSA-px85-f4q5-jh77 security-advisories@github.com