CVE-2026-79663
Medium
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.
SeverityMedium
CVSS4.8
Exploit probability—
ProductGithub.com/lin-snow/ech0
PublishedAug 25, 2026
First seenAug 25, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- github.com/lin-snow/Ech01.4.8-0.20260503035519-fd320fe3e902 or later
- github.com/lin-snow/ech01.4.8-0.20260503035519-fd320fe3e902 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/lin-snow/Ech0Go | v < 1.4.8-0.20260503035519-fd320fe3e902 | 1.4.8-0.20260503035519-fd320fe3e902 |
| github.com/lin-snow/ech0Go | v < 1.4.8-0.20260503035519-fd320fe3e902 | 1.4.8-0.20260503035519-fd320fe3e902 |
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