VULNERABILITY INTELLIGENCE
CVE-2026-79663
CVSS score4.8 MEDIUM
EPSS probability0.25%
CISA KEVNot currently listed
Published2026-08-25
Last modified2026-08-31
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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.
Weakness classification
- disclosure@vulncheck.com: CWE-79