CVE-2020-5809
MEDIUM
5.4
CVSS Score
Published: December 30, 2020 at 03:18 PM UTC
Updated: June 17, 2026 at 03:22 AM UTC
1 product affected across 1 vendorUmbraco-CMS
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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.7%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 8.9.1
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.tenable.com/security/research/tra-2020-59CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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