Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-114126— Storybook dev server: devices on the same network can obtain the WebSocket token and write code into story files

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。在版本 8.0.0 至 8.6.19、9.1.21、10.6.2 以及 11.0.0-alpha.6 期间，Storybook 的开发服务器可能将其 WebSocket 身份验证令牌暴露给能够通过本地网络加载其 HTML 页面的客户端。局域网内的攻击者可获取该令牌，并调用基于 WebSocket 的文件写入或测试功能。由于 story-write 验证机制存在弱点，攻击者可将恶意代码植入 Story 文件中。如果 Storybook

CVSS 8.7 · 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
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-114126

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Storybook dev server: devices on the same network can obtain the WebSocket token and write code into story files
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, the Storybook development server can expose its WebSocket authentication token to clients able to load its HTML pages over a local network. A LAN attacker can obtain the token and invoke WebSocket-backed file-writing or testing functionality. Weak story-write validation can allow code to be placed in story files. If the Storybook Vitest addon is installed with an old version of Vitest, the payload can use a Vitest API to write additional files or execute commands. Depending on the payload and local tooling, the attack can lead to 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:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
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-2026-114126

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-114126

请登录查看更多情报信息。

Other References for CVE-2026-114126 (12)

IV. Related Vulnerabilities

Same product: storybook
Same vendor: storybookjs
Same weakness: CWE-22

V. Comments for CVE-2026-114126

No comments yet

Leave a comment