CVE-2026-79663
MEDIUM
NVD
CVSS Score
4.8
Severity
MEDIUM
Published
Aug 25, 2026
Vendor
unknown
Description
Ech0 before 4.7.3 contains a stored cross-site scripting vulnerability in the public RSS feed where tag names and markdown content are rendered without HTML escaping. Attackers with admin privileges can inject malicious tag names or raw HTML in echo content that executes as JavaScript in RSS readers that render HTML-type summaries, affecting anonymous subscribers and other users.