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.
euvd · EUVD-2026-107393
PublishedStorybook 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