---
cve: "CVE-2026-72730"
severity: "HIGH"
cvss: 8.7
epss: "24%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-08-10 17:17:37"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T22:41:16+02:00"
---

# CVE-2026-72730

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 94190ccb5176eb4ab1f2b509fcecc3fc682dadae (Commit)
- 3a87be49d621faddf5cea3f6a090adc9b7cbb7e8 (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459>
- <https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf>
- <https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5>
- <https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea>
- <https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-72730) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_