CVE-2020-5809

Public Exploit

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.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.32%
Third-Party Advisory tenable.com
Affected: n/a Umbraco CMS
Published at:
Updated at:

References

Link Tags
https://www.tenable.com/security/research/tra-2020-59 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-5809?
CVE-2020-5809 has been scored as a medium severity vulnerability.
How to fix CVE-2020-5809?
To fix CVE-2020-5809, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-5809 being actively exploited in the wild?
It is possible that CVE-2020-5809 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5809?
CVE-2020-5809 affects n/a Umbraco CMS.
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