CVE-2026-114125

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.

References

https://github.com/storybookjs/storybook/security/advisories/GHSA-f2ph-cmg5-wxc8

https://github.com/storybookjs/storybook/releases/tag/v9.1.21

https://github.com/storybookjs/storybook/releases/tag/v8.6.19

https://github.com/storybookjs/storybook/releases/tag/v11.0.0-alpha.6

https://github.com/storybookjs/storybook/releases/tag/v10.6.2

https://github.com/storybookjs/storybook/pull/36726

https://github.com/storybookjs/storybook/commit/df3fed468c9b4830605f00068c4bc6b7e1e215ed

https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e

https://github.com/storybookjs/storybook/commit/a9ef9345d73224c73e0b81dc2701ec5b465ea9bb

https://github.com/storybookjs/storybook/commit/97513d999910d071c2b36830495dab63e17d9fe0

https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178

https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-107393

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4