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EUVD-2026-107408Published

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 c…

Exact source revision recorded 30 Oct 2026 01:58:49 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

euvd · EUVD-2026-107408

Published

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.

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Oct 21, 2026, 5:21:29 PM

dateUpdated: Oct 28, 2026, 1:28:25 AM

3 related source bulletins · separate from aliases

RHSA-2026:88478: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

CVE-2026-111755 · CVE-2026-111756 · CVE-2026-114125 · CVE-2026-114126

RHSA-2026:88537: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

CVE-2026-111755 · CVE-2026-111756 · CVE-2026-114125 · CVE-2026-114126

RHSA-2026:88541: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

CVE-2026-40895 · CVE-2026-111755 · CVE-2026-111756 · CVE-2026-114125 · CVE-2026-114126

Source published
Oct 21, 2026, 5:21:29 PM (timezone not stated)
Source modified
Oct 28, 2026, 1:28:25 AM (timezone not stated)
Observed here
30 Oct 2026 01:58:49 UTC
Source terms
ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 8.7 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

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Sources read 31 Oct 15:11 UTC · 272 of 272 readable · 270 fully read · documentation 469/469 current

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