CVE-2020-5809

A stored XSS vulnerability exists in Umbraco CMS <= 8.9.1 or current

published December 30, 2020

CVSS
—
EPSS
1%
Percentile
52.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00685 · 52.1th percentile
Published
2020-12-30T15:18Z
EPSS history
Timeline
  • 30 DEC 15:18Z
    A stored XSS vulnerability exists in Umbraco CMS <= 8.9.1 or current
    cvelistv5