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v9.1.21

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Storybook·Oct 12, 2026, 06:59 PMFixSecurity-relevantAI-assisted summary

Summary

Tighten dev server security by restricting preview postMessage origins, blocking iframe embedding from non‑localhost, and separating manager/preview roles on the channel.
Add extensive validation: reject out‑of‑project component searches, enforce component export names, validate story paths, names, and arg keys, and warn on host/origin mismatches.
Update Vitest addon to disable browser file writes and command execution for safer testing.

securitybugfixfeatureminorsource healthy

Official source Last checked Oct 19, 2026, 5:00 PM

Safe to upgrade.

Older than 72 h, no known advisories, no follow-up hotfix, license and provenance unchanged.

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AI-assisted summarysource healthyLast checked Oct 19, 2026, 5:00 PM

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