Insecure Default Initialization of Resource Affecting @storybook/addon-vitest package, versions >=9.0.0 <9.1.21>=10.0.0 <10.6.2>=11.0.0-alpha.0 <11.0.0-alpha.6
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.
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Test your applications- Snyk IDSNYK-JS-STORYBOOKADDONVITEST-21460710
- published23 Oct 2026
- disclosed22 Oct 2026
- creditKimiSecurityTeam, christos-cantina-security
Introduced: 22 Oct 2026
NewCVE-2026-114126 (opens in a new tab)How to fix?
Upgrade @storybook/addon-vitest to version 9.1.21, 10.6.2, 11.0.0-alpha.6 or higher.
Overview
@storybook/addon-vitest is a Storybook Vitest addon: Blazing fast component testing using stories
Affected versions of this package are vulnerable to Insecure Default Initialization of Resource via the Vitest plugin in storybookTest, where allowWrite and allowExec permissions are not applied to the resolved project config when using Vitest 5. Vitest 5 reads file-write and command-execution permissions from test.api rather than test.browser.api, so the plugin's defaults of false for both permissions are silently ignored, leaving story code running in the browser able to write files and execute commands in Node through the Vitest browser API whenever the server is bound to loopback.