---
cve: "CVE-2025-48053"
severity: "HIGH"
cvss: 8.7
epss: "32%"
vendor: "discourse"
kev: false
exploited: false
published: "2025-06-09 13:15:23"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T04:43:18+02:00"
---

# CVE-2025-48053

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch, sending a malicious URL in a PM to a bot user can cause a reduced the availability of a Discourse instance. This issue is patched in version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch. No known workarounds are available.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 7cb04244c24cf8654cec417054e6560f7e0a8559 (Commit)
- 05a304006600f36c3e45d19c9c5919f43f5541c9 (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-3q5q-qmrm-rvwx>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-48053) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_