CVE-2026-46609 MEDIUM

CVE-2026-46609: Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog

Vendor Umbraco
Product Umbraco-CMS
Weakness CWE-79 · XSS
Published June 10, 2026
Last update June 10, 2026
View on NVD All CVEs

CVSS base score

4.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 10, 2026 CVE published
June 10, 2026 Record updated