https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-08T11:00:04.242853+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2026-31833 CVE-2026-31833 — Umbraco has Stored XSS in UFM Rendering Pipeline via Permissive DOMPurify Attribute Filtering 2026-10-08T11:00:04.259725+00:00

Affected: Umbraco-CMS

Umbraco is an ASP.NET CMS. From 16.2.0 to before 16.5.1 and 17.2.2, An authenticated backoffice user with access to Settings can inject malicious HTML into property type descriptions. Due to an overly permissive attributeNameCheck configuration (/.+/) in the UFM DOMPurify instance, event handler attributes such as onclick and onload, when used within Umbraco web components (umb-*, uui-*, ufm-*) were not filtered. This vulnerability is fixed in 16.5.1 and 17.2.2.