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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-114125)

ID	Name	Product	Family	Type	Severity
476693	Chainguard: langfuse-fips-3-worker: security update to 3.225.12-r4	Tenable Cloud Security	Chainguard Local Security Checks	Local	high
476693	Chainguard: langfuse-fips-3-worker: security update to 3.225.12-r4	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	high
476544	SCA: security update for @storybook/addon-mcp, @storybook/addon-vitest, @storybook/core, @storybook/core-server, @storybook/experimental-addon-test, storybook (GHSA-f2ph-cmg5-wxc8)	Tenable Cloud Security	SCA Checks	Local	high
476544	SCA: security update for @storybook/addon-mcp, @storybook/addon-vitest, @storybook/core, @storybook/core-server, @storybook/experimental-addon-test, storybook (GHSA-f2ph-cmg5-wxc8)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-114125

high

Tenable Plugins

high

high

high

high