# @storybook/addon-vitest (npm) vulnerabilities

2 known vulnerabilities (2 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 10.6.6 (Nov 5, 2026): no advisory affects it
- Newest unaffected release: 10.6.6 (Nov 5, 2026), the latest release
- Weekly downloads: 9M
- Dependents: 32
- Releases: 500+ since 9.1.18 (Feb 17, 2026)
- Registry: https://www.npmjs.com/package/@storybook/addon-vitest
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-114126: 9.1.18 to 9.1.20 (9.1.21 is outside it); 10.2.9 to 10.6.1 (10.6.2 is outside it); 11.0.0-alpha.0 to 11.0.0-alpha.5 (11.0.0-alpha.6 is outside it)
- CVE-2026-114125: 9.1.18 to 9.1.20 (9.1.21 is outside it); 10.2.9 to 10.6.1 (10.6.2 is outside it); 11.0.0-alpha.0 to 11.0.0-alpha.5 (11.0.0-alpha.6 is outside it)

Older releases aren't stored, so the earliest spans may start sooner.

## Advisories (2)

### [CVE-2026-114126](https://cve.now/CVE-2026-114126): Storybook dev server: devices on the same network can obtain the WebSocket token and write code into story files

- Severity: High 8.7
- Published: Oct 21, 2026
- Affected: from 9.0.0, fixed in 9.1.21; from 10.0.0, fixed in 10.6.2; from 11.0.0-alpha.0, fixed in 11.0.0-alpha.6.
- Fixed in 9.1.21 (released Oct 12, 2026, 9 days before disclosure), 10.6.2 (released Oct 12, 2026, 9 days before disclosure) and 11.0.0-alpha.6 (released Oct 12, 2026, 9 days before disclosure).
- The latest release, 10.6.6, is not affected.
- 41% of @storybook/addon-vitest downloads last week were affected versions (3.9M).

### [CVE-2026-114125](https://cve.now/CVE-2026-114125): Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites

- Severity: High 8.6
- Published: Oct 21, 2026
- Affected: from 9.0.0, fixed in 9.1.21; from 10.0.0, fixed in 10.6.2; from 11.0.0-alpha.0, fixed in 11.0.0-alpha.6.
- Fixed in 9.1.21 (released Oct 12, 2026, 9 days before disclosure), 10.6.2 (released Oct 12, 2026, 9 days before disclosure) and 11.0.0-alpha.6 (released Oct 12, 2026, 9 days before disclosure).
- The latest release, 10.6.6, is not affected.
- 41% of @storybook/addon-vitest downloads last week were affected versions (3.9M).

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