Arbitrary Code Injection Affecting storybook package, versions <7.6.23>=8.0.0-alpha.0 <8.6.17>=9.0.0-alpha.0 <9.1.19>=10.0.0-beta.0 <10.2.10
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Arbitrary Code Injection vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-JS-STORYBOOK-15353401
- published26 Feb 2026
- disclosed26 Feb 2026
- creditAikido-Security, Rein Daelman, Robbe Verwilghen, JorianWoltjer
Introduced: 26 Feb 2026
NewCVE-2026-27148 (opens in a new tab)How to fix?
Upgrade storybook to version 7.6.23, 8.6.17, 9.1.19, 10.2.10 or higher.
Overview
storybook is a frontend workshop for building UI components and pages in isolation.
Affected versions of this package are vulnerable to Arbitrary Code Injection via the WebSocket message handlers for creating and saving stories, specifically through unsanitized input in the componentFilePath field. An attacker can achieve persistent code execution or inject malicious scripts by sending crafted WebSocket messages to the local development server.
Note:
This is only exploitable if a developer visits a malicious website while their local development server is running, or if the development server is intentionally exposed publicly.