CVE-2020-5809
MEDIUM5.4EPSS 0.42%Umbraco CMS vulnerable to stored XSS
Published: 5/24/2022Modified: 2/16/2024
Description
A stored XSS vulnerability exists in Umbraco CMS <= 8.9.1 or current. An authenticated user can inject arbitrary JavaScript code into iframes when editing content using the TinyMCE rich-text editor, as TinyMCE is configured to allow iframes by default in Umbraco CMS.
Affected packages (1)
- NuGet/UmbracoCms.Corefrom 0, <= 8.9.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |