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EUVD-2026-107393Published

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 developmen…

Exact source revision recorded 28 Oct 2026 00:55:20 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

euvd · EUVD-2026-107393

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, 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.

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, 5:08:12 PM

dateUpdated: Oct 21, 2026, 5:08:12 PM

3 related source bulletins · separate from aliases

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

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

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

Source published
Oct 21, 2026, 5:08:12 PM (timezone not stated)
Source modified
Oct 21, 2026, 5:08:12 PM (timezone not stated)
Observed here
28 Oct 2026 00:55:20 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 · 8.6 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

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Sources read 31 Oct 02:23 UTC · 272 of 272 readable · 270 fully read · documentation 469/469 current

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