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

🗓️ 21 Oct 2026 17:23:29Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 3 Views

Missing origin validation in Storybook preview allows code injection and file changes.

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Detection
Refs
Vulners
Node
OR
storybookaddon-mcpRange11.0.0-alpha.0–11.0.0-alpha.6npm
storybookaddon-mcpRange10.6.0–10.6.2npm
storybookaddon-vitestRange11.0.0-alpha.0–11.0.0-alpha.6npm
storybookaddon-vitestRange10.0.0–10.6.2npm
storybookaddon-vitestRange9.0.0–9.1.21npm
storybookexperimental-addon-testRange8.0.0–8.6.19npm
storybookcore-serverRange8.0.0–8.6.19npm
storybookcoreRange8.0.0–8.6.19npm
storybookstorybookRange11.0.0-alpha.0–11.0.0-alpha.6npm
storybookstorybookRange10.0.0–10.6.2npm
storybookstorybookRange9.0.0–9.1.21npm
storybookstorybookRange8.0.0–8.6.19npm

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21 Oct 2026 17:23Current
5.9Medium risk
Vulners AI Score5.9
CVSS 48.6
3