---
cve: "CVE-2026-33424"
severity: "MEDIUM"
cvss: 5.9
epss: "0.2%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-03-21 00:16:26"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T05:13:28+02:00"
---

# CVE-2026-33424

> 5.9 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an attacker can grant access to a private message topic through invites even after they lose access to that PM. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 808b2ac23d8ff421563b40203091026732471c60 (Commit)
- f38464e46df1b8c51f7d60826502476908d6bb2b (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-hgcp-p7hq-cwxw>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33424) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_