---
cve: "CVE-2023-28111"
severity: "MEDIUM"
cvss: 5.7
epss: "56%"
vendor: "discourse"
kev: false
exploited: false
published: "2023-03-17 17:15:11"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T10:42:28+02:00"
---

# CVE-2023-28111

> 5.7 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the `beta` and `tests-passed` branches, attackers are able to bypass Discourse's server-side request forgery (SSRF) protection for private IPv4 addresses by using a IPv4-mapped IPv6 address. The issue is patched in the latest beta and tests-passed version of Discourse. version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 0876f262e932da2478ed1d2ec275bd2153001213 (Commit)
- fd16eade7fcc6bba4b71e71106a2eb13cdfdae4a (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-26h3-8ww8-v5fc>
- <https://github.com/discourse/discourse/pull/20710>
- <https://github.com/discourse/discourse/commit/fd16eade7fcc6bba4b71e71106a2eb13cdfdae4a>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-28111) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_