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CVE-2026-114125— Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites

Quick assessment

Affected
storybookjs storybook
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Storybook 是一个用于在隔离环境中构建用户界面组件和页面的前端开发工作台。在 8.0.0 至 8.6.19、9.1.21、10.6.2 以及 11.0.0-alpha.6 版本中，恶意网站能够与正在运行的 Storybook 开发服务器的预览界面进行交互。由于 iframe 嵌入限制和消息来源（message-origin）校验不足，攻击者控制的事件可传递至正在运行的预览环境中。该攻击需要开发者访问恶意网站并与其中注入的界面进行交互。攻击可能导致对 Story 文件进行未授权的修改；若被修改的文件随后被本地

CVSS 8.6 · High

Affected Version Matrix 4

VendorProduct Version RangeStatus
storybookjs storybook >= 8.0.0, < 8.6.19 affected
>= 9.0.0, < 9.1.21 affected
>= 10.0.0, < 10.6.2 affected
>= 11.0.0-alpha.0, < 11.0.0-alpha.6 affected
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I. Basic Information for CVE-2026-114125

Vulnerability Information
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Vulnerability Title
Storybook: Missing origin validation in Storybook preview allows code injection from malicious websites
Source: CVE Program / CVE List V5
Vulnerability Description
Storybook is a frontend workshop for building user interface components and pages in isolation. From 8.0.0 until 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6, a malicious website can interact with the preview of a running Storybook development server. Insufficient iframe embedding and message-origin restrictions can allow attacker-controlled events to reach the running preview. A developer must visit the malicious website and interact with the injected interface. The attack can cause unauthorized changes to story files and, if a changed file is later executed by a local runtime, arbitrary code execution with the developer's privileges. This issue is fixed in 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
storybookjs storybook >= 8.0.0, < 8.6.19 -

II. Public POCs for CVE-2026-114125

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III. Intelligence Information for CVE-2026-114125

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Patches & Fixes for CVE-2026-114125 (2)

Vendor Advisories for CVE-2026-114125 (1)

Vendor Pages for CVE-2026-114125 (4)

Other References for CVE-2026-114125 (1)

IV. Related Vulnerabilities

Same product: storybook
Same vendor: storybookjs
Same weakness: CWE-94

V. Comments for CVE-2026-114125

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