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CVE-2026-72730 Discourse: Stored XSS chat-transcript username unescaped in Rich Text Editor

🗓️ 10 Aug 2026 16:17:04Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 40 Views

Discourse Rich Text Editor renders chat-transcript username as HTML, enabling stored XSS before 2026.1.6.

Related
Affected
Refs
[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": "< 2026.1.6",
        "status": "affected"
      },
      {
        "version": ">= 2026.5.0-latest, < 2026.5.2",
        "status": "affected"
      },
      {
        "version": ">= 2026.6.0-latest, < 2026.6.1",
        "status": "affected"
      }
    ]
  }
]

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10 Aug 2026 16:17Current
CVSS 3.18.7
EPSS0.0043
SSVC
40