Improper Encoding or Escaping of Output Affecting github.com/lin-snow/ech0/internal/util/md package, versions <4.7.3
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMLINSNOWECH0INTERNALUTILMD-16634923
- published11 May 2026
- disclosed7 May 2026
- creditadrgs
Introduced: 7 May 2026
CVE NOT AVAILABLE CWE-116 Â (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade github.com/lin-snow/ech0/internal/util/md to version 4.7.3 or higher.
Overview
Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output via the RSS feed rendering process. An attacker can execute arbitrary JavaScript in the context of RSS readers by injecting malicious tag names or raw HTML markdown content. This is only exploitable if a non-owner admin or the owner with echo-creation rights creates content containing attacker-controlled input, and subscribers use RSS readers that render HTML content.