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OpenAdvisories
Medium · 4.6 CVE-2026-46609 EUVD-2026-36070GHSA-vr9v-27gg-qgx4

Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog

Published Jun 10, 2026 · Updated Jun 10, 2026 · Assigned by GitHub_M

Description

Umbraco is an ASP.NET CMS. From version 14.0.0 to before version 17.4.0, authenticated users are able to inject HTML into an input field, which is rendered in the confirmation dialog without proper output encoding. This issue has been patched in version 17.4.0.

Affected products

VendorProductAffectedFixed
umbraco Umbraco-CMS >= 14.0.0, < 17.4.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
NuGet Umbraco.Cms >= 14.0.0, < 17.4.0 17.4.0 GHSA-vr9v-27gg-qgx4

References