CVE-2020-5809 describes a stored Cross-Site Scripting (XSS) vulnerability in Umbraco CMS versions 8.9.1 and earlier. An authenticated user can inject malicious JavaScript into content via the TinyMCE editor, which is configured to permit iframes by default. This medium-severity vulnerability (CVSS 5.4) requires user interaction and low privileges, potentially leading to limited confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 8.9.1CPE matchmatch criteria | cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Umbraco CMS vulnerable to stored XSS
May 24, 2022Umbraco Cloud CMS Multiple Vulnerabilities
Oct 21, 2020Umbraco Cloud CMS Multiple Vulnerabilities
Oct 21, 2020Umbraco Cloud CMS Multiple Vulnerabilities
Oct 21, 2020Umbraco Cloud CMS Multiple Vulnerabilities
Oct 21, 2020Umbraco Cloud CMS Multiple Vulnerabilities
Oct 21, 2020Umbraco Cloud CMS Multiple Vulnerabilities
Oct 21, 2020Umbraco Cloud CMS Multiple Vulnerabilities
Oct 21, 2020