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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2026-114125

Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites

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Status
Published
Published
Updated
Assigning organization
GitHub_M

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

storybookjs storybook

  • >= 8.0.0, < 8.6.19affected
  • >= 9.0.0, < 9.1.21affected
  • >= 10.0.0, < 10.6.2affected
  • >= 11.0.0-alpha.0, < 11.0.0-alpha.6affected

References