---
cve: "CVE-2026-72728"
severity: "MEDIUM"
cvss: 6.3
epss: "19%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-08-10 17:17:37"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T01:18:12+02:00"
---

# CVE-2026-72728

> 6.3 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to 2026.1.7, an authenticated user could submit specially formed URLs that bypassed the Onebox allowlist and embedded malicious content in a site. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- b6af77c0382ac61817e825e4e285217327772b54 (Commit)
- ac368a8cac47e413b99f122c890e32c133a4bacc (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-qp9j-3v7r-wrvr>
- <https://github.com/discourse/discourse/commit/92eec47e8b477cb8b4ccdb237e26dc1ba8f8b76b>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-72728) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_